Membranes and membrane transport
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Transcript of Membranes and membrane transport
![Page 1: Membranes and membrane transport](https://reader035.fdocuments.us/reader035/viewer/2022081417/5539934d55034680358b4a09/html5/thumbnails/1.jpg)
MembranesStephen Taylori-Biologynet Photo credit Plasmolysis by MNolf via
httpcommonswikimediaorgwikiFileRhoeo_Discolor_-_Plasmolysisjpg
Pre-assessmentbull What can you label on this diagram bull Can you explain three different methods of transport across a membrane
Plasma Membranebull Label the diagram with components amp functionsbull Identify components that are involved in transport
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Plasmolysis in Elodea and in onion cells 1 Set up slides of Elodea cells and onion cells with tap water medium2 Find cells under the microscope Draw and label what you see
Include magnification You might need to try different stains 3 Draw salt solution through the slides Observe and draw the effects 4 Explain the effects of changing the salt concentration on the cells
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Explain passive transport across membranes by simple diffusion amp facilitated diffusion
Simple amp facilitated diffusion are passive bull No energy input is required
There is a net movement of molecules from one side of the membrane to the other bull The motion of molecules is random (Brownian motion)
bull But there is an overall general movement in one direction
This net movement is down the concentration gradient bull From areas of high concentration to low concentration
Movement is across a selectively or partially permeable membraneDependent on size or properties some molecules can cross and not others
Simple DiffusionOccurs when the moleculersquos properties allow them
pass across the membrane
Facilitated DiffusionSome molecules cannot cross easily for example if they are polar the phospholipids of the bilayer will
repel them
The rate of diffusion is affected by bull magnitude of concentration gradient
bull SAVol ratio (more membranes more transport per unit volume)
bull Length of diffusion pathway (longer journey gives slower diffusion)
Channel proteins are integral membrane proteins that pass through the membrane
Their properties allow molecules to pass through (eg polar molecules or ions)
Activation of these channels might be voltage-gated (eg in neurons) or binding-activated
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Active transport uses energy in the form of ATP to move molecules across a selectively permeable membrane against the concentration gradient using protein pumps
Why do this To move molecules against the concentration gradient or to create a large concentration gradient across a membrane
Protein pumps These are integral passing through the membrane They are specific ndash only working with the target molecule
What happens 1 Target molecules bind to the pump 2 ATP also binds to the pump ATP is broken releasing energy and causing a
conformational (shape) change in the protein pump 3 This conformational change pushes the molecules across the membrane4 The molecule unbinds and the pump reverts back to the original shape
Examples bull Sodium-potassium pump is used to re-polarise neurons after an action potential ready to fire again
bull Proton pumps in mitochondria generate a high concentration gradient of H+ ions ready for chemiosmosis through ATP synthase used for generating ATP
Active transport uses energy in the form of ATP to move molecules across a selectively permeable membrane against the concentration gradient using protein pumps
Why do this
Protein pumps
What happens
Examples
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Annotate this diagram to explain vesicle transport amp exocytosis
Animated tutorial httpbcswhfreemancomthelifewire8econtentcat_0400504003html
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
For more resources amp links
This is a Creative Commons presentation It may be linked and embedded but not sold or re-hosted
Please consider a donation to charity via Biology4GoodClick here for more information about Biology4Good charity donations
- Slide 1
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![Page 2: Membranes and membrane transport](https://reader035.fdocuments.us/reader035/viewer/2022081417/5539934d55034680358b4a09/html5/thumbnails/2.jpg)
Pre-assessmentbull What can you label on this diagram bull Can you explain three different methods of transport across a membrane
Plasma Membranebull Label the diagram with components amp functionsbull Identify components that are involved in transport
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Plasmolysis in Elodea and in onion cells 1 Set up slides of Elodea cells and onion cells with tap water medium2 Find cells under the microscope Draw and label what you see
Include magnification You might need to try different stains 3 Draw salt solution through the slides Observe and draw the effects 4 Explain the effects of changing the salt concentration on the cells
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Explain passive transport across membranes by simple diffusion amp facilitated diffusion
Simple amp facilitated diffusion are passive bull No energy input is required
There is a net movement of molecules from one side of the membrane to the other bull The motion of molecules is random (Brownian motion)
bull But there is an overall general movement in one direction
This net movement is down the concentration gradient bull From areas of high concentration to low concentration
Movement is across a selectively or partially permeable membraneDependent on size or properties some molecules can cross and not others
Simple DiffusionOccurs when the moleculersquos properties allow them
pass across the membrane
Facilitated DiffusionSome molecules cannot cross easily for example if they are polar the phospholipids of the bilayer will
repel them
The rate of diffusion is affected by bull magnitude of concentration gradient
bull SAVol ratio (more membranes more transport per unit volume)
bull Length of diffusion pathway (longer journey gives slower diffusion)
Channel proteins are integral membrane proteins that pass through the membrane
Their properties allow molecules to pass through (eg polar molecules or ions)
Activation of these channels might be voltage-gated (eg in neurons) or binding-activated
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Active transport uses energy in the form of ATP to move molecules across a selectively permeable membrane against the concentration gradient using protein pumps
Why do this To move molecules against the concentration gradient or to create a large concentration gradient across a membrane
Protein pumps These are integral passing through the membrane They are specific ndash only working with the target molecule
What happens 1 Target molecules bind to the pump 2 ATP also binds to the pump ATP is broken releasing energy and causing a
conformational (shape) change in the protein pump 3 This conformational change pushes the molecules across the membrane4 The molecule unbinds and the pump reverts back to the original shape
Examples bull Sodium-potassium pump is used to re-polarise neurons after an action potential ready to fire again
bull Proton pumps in mitochondria generate a high concentration gradient of H+ ions ready for chemiosmosis through ATP synthase used for generating ATP
Active transport uses energy in the form of ATP to move molecules across a selectively permeable membrane against the concentration gradient using protein pumps
Why do this
Protein pumps
What happens
Examples
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Annotate this diagram to explain vesicle transport amp exocytosis
Animated tutorial httpbcswhfreemancomthelifewire8econtentcat_0400504003html
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
For more resources amp links
This is a Creative Commons presentation It may be linked and embedded but not sold or re-hosted
Please consider a donation to charity via Biology4GoodClick here for more information about Biology4Good charity donations
- Slide 1
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![Page 3: Membranes and membrane transport](https://reader035.fdocuments.us/reader035/viewer/2022081417/5539934d55034680358b4a09/html5/thumbnails/3.jpg)
Plasma Membranebull Label the diagram with components amp functionsbull Identify components that are involved in transport
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Plasmolysis in Elodea and in onion cells 1 Set up slides of Elodea cells and onion cells with tap water medium2 Find cells under the microscope Draw and label what you see
Include magnification You might need to try different stains 3 Draw salt solution through the slides Observe and draw the effects 4 Explain the effects of changing the salt concentration on the cells
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Explain passive transport across membranes by simple diffusion amp facilitated diffusion
Simple amp facilitated diffusion are passive bull No energy input is required
There is a net movement of molecules from one side of the membrane to the other bull The motion of molecules is random (Brownian motion)
bull But there is an overall general movement in one direction
This net movement is down the concentration gradient bull From areas of high concentration to low concentration
Movement is across a selectively or partially permeable membraneDependent on size or properties some molecules can cross and not others
Simple DiffusionOccurs when the moleculersquos properties allow them
pass across the membrane
Facilitated DiffusionSome molecules cannot cross easily for example if they are polar the phospholipids of the bilayer will
repel them
The rate of diffusion is affected by bull magnitude of concentration gradient
bull SAVol ratio (more membranes more transport per unit volume)
bull Length of diffusion pathway (longer journey gives slower diffusion)
Channel proteins are integral membrane proteins that pass through the membrane
Their properties allow molecules to pass through (eg polar molecules or ions)
Activation of these channels might be voltage-gated (eg in neurons) or binding-activated
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Active transport uses energy in the form of ATP to move molecules across a selectively permeable membrane against the concentration gradient using protein pumps
Why do this To move molecules against the concentration gradient or to create a large concentration gradient across a membrane
Protein pumps These are integral passing through the membrane They are specific ndash only working with the target molecule
What happens 1 Target molecules bind to the pump 2 ATP also binds to the pump ATP is broken releasing energy and causing a
conformational (shape) change in the protein pump 3 This conformational change pushes the molecules across the membrane4 The molecule unbinds and the pump reverts back to the original shape
Examples bull Sodium-potassium pump is used to re-polarise neurons after an action potential ready to fire again
bull Proton pumps in mitochondria generate a high concentration gradient of H+ ions ready for chemiosmosis through ATP synthase used for generating ATP
Active transport uses energy in the form of ATP to move molecules across a selectively permeable membrane against the concentration gradient using protein pumps
Why do this
Protein pumps
What happens
Examples
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Annotate this diagram to explain vesicle transport amp exocytosis
Animated tutorial httpbcswhfreemancomthelifewire8econtentcat_0400504003html
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
For more resources amp links
This is a Creative Commons presentation It may be linked and embedded but not sold or re-hosted
Please consider a donation to charity via Biology4GoodClick here for more information about Biology4Good charity donations
- Slide 1
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![Page 4: Membranes and membrane transport](https://reader035.fdocuments.us/reader035/viewer/2022081417/5539934d55034680358b4a09/html5/thumbnails/4.jpg)
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Plasmolysis in Elodea and in onion cells 1 Set up slides of Elodea cells and onion cells with tap water medium2 Find cells under the microscope Draw and label what you see
Include magnification You might need to try different stains 3 Draw salt solution through the slides Observe and draw the effects 4 Explain the effects of changing the salt concentration on the cells
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Explain passive transport across membranes by simple diffusion amp facilitated diffusion
Simple amp facilitated diffusion are passive bull No energy input is required
There is a net movement of molecules from one side of the membrane to the other bull The motion of molecules is random (Brownian motion)
bull But there is an overall general movement in one direction
This net movement is down the concentration gradient bull From areas of high concentration to low concentration
Movement is across a selectively or partially permeable membraneDependent on size or properties some molecules can cross and not others
Simple DiffusionOccurs when the moleculersquos properties allow them
pass across the membrane
Facilitated DiffusionSome molecules cannot cross easily for example if they are polar the phospholipids of the bilayer will
repel them
The rate of diffusion is affected by bull magnitude of concentration gradient
bull SAVol ratio (more membranes more transport per unit volume)
bull Length of diffusion pathway (longer journey gives slower diffusion)
Channel proteins are integral membrane proteins that pass through the membrane
Their properties allow molecules to pass through (eg polar molecules or ions)
Activation of these channels might be voltage-gated (eg in neurons) or binding-activated
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Active transport uses energy in the form of ATP to move molecules across a selectively permeable membrane against the concentration gradient using protein pumps
Why do this To move molecules against the concentration gradient or to create a large concentration gradient across a membrane
Protein pumps These are integral passing through the membrane They are specific ndash only working with the target molecule
What happens 1 Target molecules bind to the pump 2 ATP also binds to the pump ATP is broken releasing energy and causing a
conformational (shape) change in the protein pump 3 This conformational change pushes the molecules across the membrane4 The molecule unbinds and the pump reverts back to the original shape
Examples bull Sodium-potassium pump is used to re-polarise neurons after an action potential ready to fire again
bull Proton pumps in mitochondria generate a high concentration gradient of H+ ions ready for chemiosmosis through ATP synthase used for generating ATP
Active transport uses energy in the form of ATP to move molecules across a selectively permeable membrane against the concentration gradient using protein pumps
Why do this
Protein pumps
What happens
Examples
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Annotate this diagram to explain vesicle transport amp exocytosis
Animated tutorial httpbcswhfreemancomthelifewire8econtentcat_0400504003html
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
For more resources amp links
This is a Creative Commons presentation It may be linked and embedded but not sold or re-hosted
Please consider a donation to charity via Biology4GoodClick here for more information about Biology4Good charity donations
- Slide 1
- Slide 2
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![Page 5: Membranes and membrane transport](https://reader035.fdocuments.us/reader035/viewer/2022081417/5539934d55034680358b4a09/html5/thumbnails/5.jpg)
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Plasmolysis in Elodea and in onion cells 1 Set up slides of Elodea cells and onion cells with tap water medium2 Find cells under the microscope Draw and label what you see
Include magnification You might need to try different stains 3 Draw salt solution through the slides Observe and draw the effects 4 Explain the effects of changing the salt concentration on the cells
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Explain passive transport across membranes by simple diffusion amp facilitated diffusion
Simple amp facilitated diffusion are passive bull No energy input is required
There is a net movement of molecules from one side of the membrane to the other bull The motion of molecules is random (Brownian motion)
bull But there is an overall general movement in one direction
This net movement is down the concentration gradient bull From areas of high concentration to low concentration
Movement is across a selectively or partially permeable membraneDependent on size or properties some molecules can cross and not others
Simple DiffusionOccurs when the moleculersquos properties allow them
pass across the membrane
Facilitated DiffusionSome molecules cannot cross easily for example if they are polar the phospholipids of the bilayer will
repel them
The rate of diffusion is affected by bull magnitude of concentration gradient
bull SAVol ratio (more membranes more transport per unit volume)
bull Length of diffusion pathway (longer journey gives slower diffusion)
Channel proteins are integral membrane proteins that pass through the membrane
Their properties allow molecules to pass through (eg polar molecules or ions)
Activation of these channels might be voltage-gated (eg in neurons) or binding-activated
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Active transport uses energy in the form of ATP to move molecules across a selectively permeable membrane against the concentration gradient using protein pumps
Why do this To move molecules against the concentration gradient or to create a large concentration gradient across a membrane
Protein pumps These are integral passing through the membrane They are specific ndash only working with the target molecule
What happens 1 Target molecules bind to the pump 2 ATP also binds to the pump ATP is broken releasing energy and causing a
conformational (shape) change in the protein pump 3 This conformational change pushes the molecules across the membrane4 The molecule unbinds and the pump reverts back to the original shape
Examples bull Sodium-potassium pump is used to re-polarise neurons after an action potential ready to fire again
bull Proton pumps in mitochondria generate a high concentration gradient of H+ ions ready for chemiosmosis through ATP synthase used for generating ATP
Active transport uses energy in the form of ATP to move molecules across a selectively permeable membrane against the concentration gradient using protein pumps
Why do this
Protein pumps
What happens
Examples
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Annotate this diagram to explain vesicle transport amp exocytosis
Animated tutorial httpbcswhfreemancomthelifewire8econtentcat_0400504003html
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
For more resources amp links
This is a Creative Commons presentation It may be linked and embedded but not sold or re-hosted
Please consider a donation to charity via Biology4GoodClick here for more information about Biology4Good charity donations
- Slide 1
- Slide 2
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![Page 6: Membranes and membrane transport](https://reader035.fdocuments.us/reader035/viewer/2022081417/5539934d55034680358b4a09/html5/thumbnails/6.jpg)
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Plasmolysis in Elodea and in onion cells 1 Set up slides of Elodea cells and onion cells with tap water medium2 Find cells under the microscope Draw and label what you see
Include magnification You might need to try different stains 3 Draw salt solution through the slides Observe and draw the effects 4 Explain the effects of changing the salt concentration on the cells
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Explain passive transport across membranes by simple diffusion amp facilitated diffusion
Simple amp facilitated diffusion are passive bull No energy input is required
There is a net movement of molecules from one side of the membrane to the other bull The motion of molecules is random (Brownian motion)
bull But there is an overall general movement in one direction
This net movement is down the concentration gradient bull From areas of high concentration to low concentration
Movement is across a selectively or partially permeable membraneDependent on size or properties some molecules can cross and not others
Simple DiffusionOccurs when the moleculersquos properties allow them
pass across the membrane
Facilitated DiffusionSome molecules cannot cross easily for example if they are polar the phospholipids of the bilayer will
repel them
The rate of diffusion is affected by bull magnitude of concentration gradient
bull SAVol ratio (more membranes more transport per unit volume)
bull Length of diffusion pathway (longer journey gives slower diffusion)
Channel proteins are integral membrane proteins that pass through the membrane
Their properties allow molecules to pass through (eg polar molecules or ions)
Activation of these channels might be voltage-gated (eg in neurons) or binding-activated
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Active transport uses energy in the form of ATP to move molecules across a selectively permeable membrane against the concentration gradient using protein pumps
Why do this To move molecules against the concentration gradient or to create a large concentration gradient across a membrane
Protein pumps These are integral passing through the membrane They are specific ndash only working with the target molecule
What happens 1 Target molecules bind to the pump 2 ATP also binds to the pump ATP is broken releasing energy and causing a
conformational (shape) change in the protein pump 3 This conformational change pushes the molecules across the membrane4 The molecule unbinds and the pump reverts back to the original shape
Examples bull Sodium-potassium pump is used to re-polarise neurons after an action potential ready to fire again
bull Proton pumps in mitochondria generate a high concentration gradient of H+ ions ready for chemiosmosis through ATP synthase used for generating ATP
Active transport uses energy in the form of ATP to move molecules across a selectively permeable membrane against the concentration gradient using protein pumps
Why do this
Protein pumps
What happens
Examples
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Annotate this diagram to explain vesicle transport amp exocytosis
Animated tutorial httpbcswhfreemancomthelifewire8econtentcat_0400504003html
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
For more resources amp links
This is a Creative Commons presentation It may be linked and embedded but not sold or re-hosted
Please consider a donation to charity via Biology4GoodClick here for more information about Biology4Good charity donations
- Slide 1
- Slide 2
- Slide 3
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![Page 7: Membranes and membrane transport](https://reader035.fdocuments.us/reader035/viewer/2022081417/5539934d55034680358b4a09/html5/thumbnails/7.jpg)
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Plasmolysis in Elodea and in onion cells 1 Set up slides of Elodea cells and onion cells with tap water medium2 Find cells under the microscope Draw and label what you see
Include magnification You might need to try different stains 3 Draw salt solution through the slides Observe and draw the effects 4 Explain the effects of changing the salt concentration on the cells
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Explain passive transport across membranes by simple diffusion amp facilitated diffusion
Simple amp facilitated diffusion are passive bull No energy input is required
There is a net movement of molecules from one side of the membrane to the other bull The motion of molecules is random (Brownian motion)
bull But there is an overall general movement in one direction
This net movement is down the concentration gradient bull From areas of high concentration to low concentration
Movement is across a selectively or partially permeable membraneDependent on size or properties some molecules can cross and not others
Simple DiffusionOccurs when the moleculersquos properties allow them
pass across the membrane
Facilitated DiffusionSome molecules cannot cross easily for example if they are polar the phospholipids of the bilayer will
repel them
The rate of diffusion is affected by bull magnitude of concentration gradient
bull SAVol ratio (more membranes more transport per unit volume)
bull Length of diffusion pathway (longer journey gives slower diffusion)
Channel proteins are integral membrane proteins that pass through the membrane
Their properties allow molecules to pass through (eg polar molecules or ions)
Activation of these channels might be voltage-gated (eg in neurons) or binding-activated
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Active transport uses energy in the form of ATP to move molecules across a selectively permeable membrane against the concentration gradient using protein pumps
Why do this To move molecules against the concentration gradient or to create a large concentration gradient across a membrane
Protein pumps These are integral passing through the membrane They are specific ndash only working with the target molecule
What happens 1 Target molecules bind to the pump 2 ATP also binds to the pump ATP is broken releasing energy and causing a
conformational (shape) change in the protein pump 3 This conformational change pushes the molecules across the membrane4 The molecule unbinds and the pump reverts back to the original shape
Examples bull Sodium-potassium pump is used to re-polarise neurons after an action potential ready to fire again
bull Proton pumps in mitochondria generate a high concentration gradient of H+ ions ready for chemiosmosis through ATP synthase used for generating ATP
Active transport uses energy in the form of ATP to move molecules across a selectively permeable membrane against the concentration gradient using protein pumps
Why do this
Protein pumps
What happens
Examples
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Annotate this diagram to explain vesicle transport amp exocytosis
Animated tutorial httpbcswhfreemancomthelifewire8econtentcat_0400504003html
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
For more resources amp links
This is a Creative Commons presentation It may be linked and embedded but not sold or re-hosted
Please consider a donation to charity via Biology4GoodClick here for more information about Biology4Good charity donations
- Slide 1
- Slide 2
- Slide 3
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![Page 8: Membranes and membrane transport](https://reader035.fdocuments.us/reader035/viewer/2022081417/5539934d55034680358b4a09/html5/thumbnails/8.jpg)
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Plasmolysis in Elodea and in onion cells 1 Set up slides of Elodea cells and onion cells with tap water medium2 Find cells under the microscope Draw and label what you see
Include magnification You might need to try different stains 3 Draw salt solution through the slides Observe and draw the effects 4 Explain the effects of changing the salt concentration on the cells
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Explain passive transport across membranes by simple diffusion amp facilitated diffusion
Simple amp facilitated diffusion are passive bull No energy input is required
There is a net movement of molecules from one side of the membrane to the other bull The motion of molecules is random (Brownian motion)
bull But there is an overall general movement in one direction
This net movement is down the concentration gradient bull From areas of high concentration to low concentration
Movement is across a selectively or partially permeable membraneDependent on size or properties some molecules can cross and not others
Simple DiffusionOccurs when the moleculersquos properties allow them
pass across the membrane
Facilitated DiffusionSome molecules cannot cross easily for example if they are polar the phospholipids of the bilayer will
repel them
The rate of diffusion is affected by bull magnitude of concentration gradient
bull SAVol ratio (more membranes more transport per unit volume)
bull Length of diffusion pathway (longer journey gives slower diffusion)
Channel proteins are integral membrane proteins that pass through the membrane
Their properties allow molecules to pass through (eg polar molecules or ions)
Activation of these channels might be voltage-gated (eg in neurons) or binding-activated
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Active transport uses energy in the form of ATP to move molecules across a selectively permeable membrane against the concentration gradient using protein pumps
Why do this To move molecules against the concentration gradient or to create a large concentration gradient across a membrane
Protein pumps These are integral passing through the membrane They are specific ndash only working with the target molecule
What happens 1 Target molecules bind to the pump 2 ATP also binds to the pump ATP is broken releasing energy and causing a
conformational (shape) change in the protein pump 3 This conformational change pushes the molecules across the membrane4 The molecule unbinds and the pump reverts back to the original shape
Examples bull Sodium-potassium pump is used to re-polarise neurons after an action potential ready to fire again
bull Proton pumps in mitochondria generate a high concentration gradient of H+ ions ready for chemiosmosis through ATP synthase used for generating ATP
Active transport uses energy in the form of ATP to move molecules across a selectively permeable membrane against the concentration gradient using protein pumps
Why do this
Protein pumps
What happens
Examples
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Annotate this diagram to explain vesicle transport amp exocytosis
Animated tutorial httpbcswhfreemancomthelifewire8econtentcat_0400504003html
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
For more resources amp links
This is a Creative Commons presentation It may be linked and embedded but not sold or re-hosted
Please consider a donation to charity via Biology4GoodClick here for more information about Biology4Good charity donations
- Slide 1
- Slide 2
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![Page 9: Membranes and membrane transport](https://reader035.fdocuments.us/reader035/viewer/2022081417/5539934d55034680358b4a09/html5/thumbnails/9.jpg)
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Plasmolysis in Elodea and in onion cells 1 Set up slides of Elodea cells and onion cells with tap water medium2 Find cells under the microscope Draw and label what you see
Include magnification You might need to try different stains 3 Draw salt solution through the slides Observe and draw the effects 4 Explain the effects of changing the salt concentration on the cells
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Explain passive transport across membranes by simple diffusion amp facilitated diffusion
Simple amp facilitated diffusion are passive bull No energy input is required
There is a net movement of molecules from one side of the membrane to the other bull The motion of molecules is random (Brownian motion)
bull But there is an overall general movement in one direction
This net movement is down the concentration gradient bull From areas of high concentration to low concentration
Movement is across a selectively or partially permeable membraneDependent on size or properties some molecules can cross and not others
Simple DiffusionOccurs when the moleculersquos properties allow them
pass across the membrane
Facilitated DiffusionSome molecules cannot cross easily for example if they are polar the phospholipids of the bilayer will
repel them
The rate of diffusion is affected by bull magnitude of concentration gradient
bull SAVol ratio (more membranes more transport per unit volume)
bull Length of diffusion pathway (longer journey gives slower diffusion)
Channel proteins are integral membrane proteins that pass through the membrane
Their properties allow molecules to pass through (eg polar molecules or ions)
Activation of these channels might be voltage-gated (eg in neurons) or binding-activated
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Active transport uses energy in the form of ATP to move molecules across a selectively permeable membrane against the concentration gradient using protein pumps
Why do this To move molecules against the concentration gradient or to create a large concentration gradient across a membrane
Protein pumps These are integral passing through the membrane They are specific ndash only working with the target molecule
What happens 1 Target molecules bind to the pump 2 ATP also binds to the pump ATP is broken releasing energy and causing a
conformational (shape) change in the protein pump 3 This conformational change pushes the molecules across the membrane4 The molecule unbinds and the pump reverts back to the original shape
Examples bull Sodium-potassium pump is used to re-polarise neurons after an action potential ready to fire again
bull Proton pumps in mitochondria generate a high concentration gradient of H+ ions ready for chemiosmosis through ATP synthase used for generating ATP
Active transport uses energy in the form of ATP to move molecules across a selectively permeable membrane against the concentration gradient using protein pumps
Why do this
Protein pumps
What happens
Examples
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Annotate this diagram to explain vesicle transport amp exocytosis
Animated tutorial httpbcswhfreemancomthelifewire8econtentcat_0400504003html
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
For more resources amp links
This is a Creative Commons presentation It may be linked and embedded but not sold or re-hosted
Please consider a donation to charity via Biology4GoodClick here for more information about Biology4Good charity donations
- Slide 1
- Slide 2
- Slide 3
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![Page 10: Membranes and membrane transport](https://reader035.fdocuments.us/reader035/viewer/2022081417/5539934d55034680358b4a09/html5/thumbnails/10.jpg)
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Plasmolysis in Elodea and in onion cells 1 Set up slides of Elodea cells and onion cells with tap water medium2 Find cells under the microscope Draw and label what you see
Include magnification You might need to try different stains 3 Draw salt solution through the slides Observe and draw the effects 4 Explain the effects of changing the salt concentration on the cells
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Explain passive transport across membranes by simple diffusion amp facilitated diffusion
Simple amp facilitated diffusion are passive bull No energy input is required
There is a net movement of molecules from one side of the membrane to the other bull The motion of molecules is random (Brownian motion)
bull But there is an overall general movement in one direction
This net movement is down the concentration gradient bull From areas of high concentration to low concentration
Movement is across a selectively or partially permeable membraneDependent on size or properties some molecules can cross and not others
Simple DiffusionOccurs when the moleculersquos properties allow them
pass across the membrane
Facilitated DiffusionSome molecules cannot cross easily for example if they are polar the phospholipids of the bilayer will
repel them
The rate of diffusion is affected by bull magnitude of concentration gradient
bull SAVol ratio (more membranes more transport per unit volume)
bull Length of diffusion pathway (longer journey gives slower diffusion)
Channel proteins are integral membrane proteins that pass through the membrane
Their properties allow molecules to pass through (eg polar molecules or ions)
Activation of these channels might be voltage-gated (eg in neurons) or binding-activated
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Active transport uses energy in the form of ATP to move molecules across a selectively permeable membrane against the concentration gradient using protein pumps
Why do this To move molecules against the concentration gradient or to create a large concentration gradient across a membrane
Protein pumps These are integral passing through the membrane They are specific ndash only working with the target molecule
What happens 1 Target molecules bind to the pump 2 ATP also binds to the pump ATP is broken releasing energy and causing a
conformational (shape) change in the protein pump 3 This conformational change pushes the molecules across the membrane4 The molecule unbinds and the pump reverts back to the original shape
Examples bull Sodium-potassium pump is used to re-polarise neurons after an action potential ready to fire again
bull Proton pumps in mitochondria generate a high concentration gradient of H+ ions ready for chemiosmosis through ATP synthase used for generating ATP
Active transport uses energy in the form of ATP to move molecules across a selectively permeable membrane against the concentration gradient using protein pumps
Why do this
Protein pumps
What happens
Examples
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Annotate this diagram to explain vesicle transport amp exocytosis
Animated tutorial httpbcswhfreemancomthelifewire8econtentcat_0400504003html
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
For more resources amp links
This is a Creative Commons presentation It may be linked and embedded but not sold or re-hosted
Please consider a donation to charity via Biology4GoodClick here for more information about Biology4Good charity donations
- Slide 1
- Slide 2
- Slide 3
- Slide 4
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![Page 11: Membranes and membrane transport](https://reader035.fdocuments.us/reader035/viewer/2022081417/5539934d55034680358b4a09/html5/thumbnails/11.jpg)
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Plasmolysis in Elodea and in onion cells 1 Set up slides of Elodea cells and onion cells with tap water medium2 Find cells under the microscope Draw and label what you see
Include magnification You might need to try different stains 3 Draw salt solution through the slides Observe and draw the effects 4 Explain the effects of changing the salt concentration on the cells
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Explain passive transport across membranes by simple diffusion amp facilitated diffusion
Simple amp facilitated diffusion are passive bull No energy input is required
There is a net movement of molecules from one side of the membrane to the other bull The motion of molecules is random (Brownian motion)
bull But there is an overall general movement in one direction
This net movement is down the concentration gradient bull From areas of high concentration to low concentration
Movement is across a selectively or partially permeable membraneDependent on size or properties some molecules can cross and not others
Simple DiffusionOccurs when the moleculersquos properties allow them
pass across the membrane
Facilitated DiffusionSome molecules cannot cross easily for example if they are polar the phospholipids of the bilayer will
repel them
The rate of diffusion is affected by bull magnitude of concentration gradient
bull SAVol ratio (more membranes more transport per unit volume)
bull Length of diffusion pathway (longer journey gives slower diffusion)
Channel proteins are integral membrane proteins that pass through the membrane
Their properties allow molecules to pass through (eg polar molecules or ions)
Activation of these channels might be voltage-gated (eg in neurons) or binding-activated
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Active transport uses energy in the form of ATP to move molecules across a selectively permeable membrane against the concentration gradient using protein pumps
Why do this To move molecules against the concentration gradient or to create a large concentration gradient across a membrane
Protein pumps These are integral passing through the membrane They are specific ndash only working with the target molecule
What happens 1 Target molecules bind to the pump 2 ATP also binds to the pump ATP is broken releasing energy and causing a
conformational (shape) change in the protein pump 3 This conformational change pushes the molecules across the membrane4 The molecule unbinds and the pump reverts back to the original shape
Examples bull Sodium-potassium pump is used to re-polarise neurons after an action potential ready to fire again
bull Proton pumps in mitochondria generate a high concentration gradient of H+ ions ready for chemiosmosis through ATP synthase used for generating ATP
Active transport uses energy in the form of ATP to move molecules across a selectively permeable membrane against the concentration gradient using protein pumps
Why do this
Protein pumps
What happens
Examples
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Annotate this diagram to explain vesicle transport amp exocytosis
Animated tutorial httpbcswhfreemancomthelifewire8econtentcat_0400504003html
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
For more resources amp links
This is a Creative Commons presentation It may be linked and embedded but not sold or re-hosted
Please consider a donation to charity via Biology4GoodClick here for more information about Biology4Good charity donations
- Slide 1
- Slide 2
- Slide 3
- Slide 4
- Slide 5
- Slide 6
- Slide 7
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![Page 12: Membranes and membrane transport](https://reader035.fdocuments.us/reader035/viewer/2022081417/5539934d55034680358b4a09/html5/thumbnails/12.jpg)
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Plasmolysis in Elodea and in onion cells 1 Set up slides of Elodea cells and onion cells with tap water medium2 Find cells under the microscope Draw and label what you see
Include magnification You might need to try different stains 3 Draw salt solution through the slides Observe and draw the effects 4 Explain the effects of changing the salt concentration on the cells
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Explain passive transport across membranes by simple diffusion amp facilitated diffusion
Simple amp facilitated diffusion are passive bull No energy input is required
There is a net movement of molecules from one side of the membrane to the other bull The motion of molecules is random (Brownian motion)
bull But there is an overall general movement in one direction
This net movement is down the concentration gradient bull From areas of high concentration to low concentration
Movement is across a selectively or partially permeable membraneDependent on size or properties some molecules can cross and not others
Simple DiffusionOccurs when the moleculersquos properties allow them
pass across the membrane
Facilitated DiffusionSome molecules cannot cross easily for example if they are polar the phospholipids of the bilayer will
repel them
The rate of diffusion is affected by bull magnitude of concentration gradient
bull SAVol ratio (more membranes more transport per unit volume)
bull Length of diffusion pathway (longer journey gives slower diffusion)
Channel proteins are integral membrane proteins that pass through the membrane
Their properties allow molecules to pass through (eg polar molecules or ions)
Activation of these channels might be voltage-gated (eg in neurons) or binding-activated
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Active transport uses energy in the form of ATP to move molecules across a selectively permeable membrane against the concentration gradient using protein pumps
Why do this To move molecules against the concentration gradient or to create a large concentration gradient across a membrane
Protein pumps These are integral passing through the membrane They are specific ndash only working with the target molecule
What happens 1 Target molecules bind to the pump 2 ATP also binds to the pump ATP is broken releasing energy and causing a
conformational (shape) change in the protein pump 3 This conformational change pushes the molecules across the membrane4 The molecule unbinds and the pump reverts back to the original shape
Examples bull Sodium-potassium pump is used to re-polarise neurons after an action potential ready to fire again
bull Proton pumps in mitochondria generate a high concentration gradient of H+ ions ready for chemiosmosis through ATP synthase used for generating ATP
Active transport uses energy in the form of ATP to move molecules across a selectively permeable membrane against the concentration gradient using protein pumps
Why do this
Protein pumps
What happens
Examples
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Annotate this diagram to explain vesicle transport amp exocytosis
Animated tutorial httpbcswhfreemancomthelifewire8econtentcat_0400504003html
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
For more resources amp links
This is a Creative Commons presentation It may be linked and embedded but not sold or re-hosted
Please consider a donation to charity via Biology4GoodClick here for more information about Biology4Good charity donations
- Slide 1
- Slide 2
- Slide 3
- Slide 4
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![Page 13: Membranes and membrane transport](https://reader035.fdocuments.us/reader035/viewer/2022081417/5539934d55034680358b4a09/html5/thumbnails/13.jpg)
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Plasmolysis in Elodea and in onion cells 1 Set up slides of Elodea cells and onion cells with tap water medium2 Find cells under the microscope Draw and label what you see
Include magnification You might need to try different stains 3 Draw salt solution through the slides Observe and draw the effects 4 Explain the effects of changing the salt concentration on the cells
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Explain passive transport across membranes by simple diffusion amp facilitated diffusion
Simple amp facilitated diffusion are passive bull No energy input is required
There is a net movement of molecules from one side of the membrane to the other bull The motion of molecules is random (Brownian motion)
bull But there is an overall general movement in one direction
This net movement is down the concentration gradient bull From areas of high concentration to low concentration
Movement is across a selectively or partially permeable membraneDependent on size or properties some molecules can cross and not others
Simple DiffusionOccurs when the moleculersquos properties allow them
pass across the membrane
Facilitated DiffusionSome molecules cannot cross easily for example if they are polar the phospholipids of the bilayer will
repel them
The rate of diffusion is affected by bull magnitude of concentration gradient
bull SAVol ratio (more membranes more transport per unit volume)
bull Length of diffusion pathway (longer journey gives slower diffusion)
Channel proteins are integral membrane proteins that pass through the membrane
Their properties allow molecules to pass through (eg polar molecules or ions)
Activation of these channels might be voltage-gated (eg in neurons) or binding-activated
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Active transport uses energy in the form of ATP to move molecules across a selectively permeable membrane against the concentration gradient using protein pumps
Why do this To move molecules against the concentration gradient or to create a large concentration gradient across a membrane
Protein pumps These are integral passing through the membrane They are specific ndash only working with the target molecule
What happens 1 Target molecules bind to the pump 2 ATP also binds to the pump ATP is broken releasing energy and causing a
conformational (shape) change in the protein pump 3 This conformational change pushes the molecules across the membrane4 The molecule unbinds and the pump reverts back to the original shape
Examples bull Sodium-potassium pump is used to re-polarise neurons after an action potential ready to fire again
bull Proton pumps in mitochondria generate a high concentration gradient of H+ ions ready for chemiosmosis through ATP synthase used for generating ATP
Active transport uses energy in the form of ATP to move molecules across a selectively permeable membrane against the concentration gradient using protein pumps
Why do this
Protein pumps
What happens
Examples
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Annotate this diagram to explain vesicle transport amp exocytosis
Animated tutorial httpbcswhfreemancomthelifewire8econtentcat_0400504003html
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
For more resources amp links
This is a Creative Commons presentation It may be linked and embedded but not sold or re-hosted
Please consider a donation to charity via Biology4GoodClick here for more information about Biology4Good charity donations
- Slide 1
- Slide 2
- Slide 3
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![Page 14: Membranes and membrane transport](https://reader035.fdocuments.us/reader035/viewer/2022081417/5539934d55034680358b4a09/html5/thumbnails/14.jpg)
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Plasmolysis in Elodea and in onion cells 1 Set up slides of Elodea cells and onion cells with tap water medium2 Find cells under the microscope Draw and label what you see
Include magnification You might need to try different stains 3 Draw salt solution through the slides Observe and draw the effects 4 Explain the effects of changing the salt concentration on the cells
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Explain passive transport across membranes by simple diffusion amp facilitated diffusion
Simple amp facilitated diffusion are passive bull No energy input is required
There is a net movement of molecules from one side of the membrane to the other bull The motion of molecules is random (Brownian motion)
bull But there is an overall general movement in one direction
This net movement is down the concentration gradient bull From areas of high concentration to low concentration
Movement is across a selectively or partially permeable membraneDependent on size or properties some molecules can cross and not others
Simple DiffusionOccurs when the moleculersquos properties allow them
pass across the membrane
Facilitated DiffusionSome molecules cannot cross easily for example if they are polar the phospholipids of the bilayer will
repel them
The rate of diffusion is affected by bull magnitude of concentration gradient
bull SAVol ratio (more membranes more transport per unit volume)
bull Length of diffusion pathway (longer journey gives slower diffusion)
Channel proteins are integral membrane proteins that pass through the membrane
Their properties allow molecules to pass through (eg polar molecules or ions)
Activation of these channels might be voltage-gated (eg in neurons) or binding-activated
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Active transport uses energy in the form of ATP to move molecules across a selectively permeable membrane against the concentration gradient using protein pumps
Why do this To move molecules against the concentration gradient or to create a large concentration gradient across a membrane
Protein pumps These are integral passing through the membrane They are specific ndash only working with the target molecule
What happens 1 Target molecules bind to the pump 2 ATP also binds to the pump ATP is broken releasing energy and causing a
conformational (shape) change in the protein pump 3 This conformational change pushes the molecules across the membrane4 The molecule unbinds and the pump reverts back to the original shape
Examples bull Sodium-potassium pump is used to re-polarise neurons after an action potential ready to fire again
bull Proton pumps in mitochondria generate a high concentration gradient of H+ ions ready for chemiosmosis through ATP synthase used for generating ATP
Active transport uses energy in the form of ATP to move molecules across a selectively permeable membrane against the concentration gradient using protein pumps
Why do this
Protein pumps
What happens
Examples
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Annotate this diagram to explain vesicle transport amp exocytosis
Animated tutorial httpbcswhfreemancomthelifewire8econtentcat_0400504003html
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
For more resources amp links
This is a Creative Commons presentation It may be linked and embedded but not sold or re-hosted
Please consider a donation to charity via Biology4GoodClick here for more information about Biology4Good charity donations
- Slide 1
- Slide 2
- Slide 3
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![Page 15: Membranes and membrane transport](https://reader035.fdocuments.us/reader035/viewer/2022081417/5539934d55034680358b4a09/html5/thumbnails/15.jpg)
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Plasmolysis in Elodea and in onion cells 1 Set up slides of Elodea cells and onion cells with tap water medium2 Find cells under the microscope Draw and label what you see
Include magnification You might need to try different stains 3 Draw salt solution through the slides Observe and draw the effects 4 Explain the effects of changing the salt concentration on the cells
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Explain passive transport across membranes by simple diffusion amp facilitated diffusion
Simple amp facilitated diffusion are passive bull No energy input is required
There is a net movement of molecules from one side of the membrane to the other bull The motion of molecules is random (Brownian motion)
bull But there is an overall general movement in one direction
This net movement is down the concentration gradient bull From areas of high concentration to low concentration
Movement is across a selectively or partially permeable membraneDependent on size or properties some molecules can cross and not others
Simple DiffusionOccurs when the moleculersquos properties allow them
pass across the membrane
Facilitated DiffusionSome molecules cannot cross easily for example if they are polar the phospholipids of the bilayer will
repel them
The rate of diffusion is affected by bull magnitude of concentration gradient
bull SAVol ratio (more membranes more transport per unit volume)
bull Length of diffusion pathway (longer journey gives slower diffusion)
Channel proteins are integral membrane proteins that pass through the membrane
Their properties allow molecules to pass through (eg polar molecules or ions)
Activation of these channels might be voltage-gated (eg in neurons) or binding-activated
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Active transport uses energy in the form of ATP to move molecules across a selectively permeable membrane against the concentration gradient using protein pumps
Why do this To move molecules against the concentration gradient or to create a large concentration gradient across a membrane
Protein pumps These are integral passing through the membrane They are specific ndash only working with the target molecule
What happens 1 Target molecules bind to the pump 2 ATP also binds to the pump ATP is broken releasing energy and causing a
conformational (shape) change in the protein pump 3 This conformational change pushes the molecules across the membrane4 The molecule unbinds and the pump reverts back to the original shape
Examples bull Sodium-potassium pump is used to re-polarise neurons after an action potential ready to fire again
bull Proton pumps in mitochondria generate a high concentration gradient of H+ ions ready for chemiosmosis through ATP synthase used for generating ATP
Active transport uses energy in the form of ATP to move molecules across a selectively permeable membrane against the concentration gradient using protein pumps
Why do this
Protein pumps
What happens
Examples
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Annotate this diagram to explain vesicle transport amp exocytosis
Animated tutorial httpbcswhfreemancomthelifewire8econtentcat_0400504003html
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
For more resources amp links
This is a Creative Commons presentation It may be linked and embedded but not sold or re-hosted
Please consider a donation to charity via Biology4GoodClick here for more information about Biology4Good charity donations
- Slide 1
- Slide 2
- Slide 3
- Slide 4
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![Page 16: Membranes and membrane transport](https://reader035.fdocuments.us/reader035/viewer/2022081417/5539934d55034680358b4a09/html5/thumbnails/16.jpg)
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Plasmolysis in Elodea and in onion cells 1 Set up slides of Elodea cells and onion cells with tap water medium2 Find cells under the microscope Draw and label what you see
Include magnification You might need to try different stains 3 Draw salt solution through the slides Observe and draw the effects 4 Explain the effects of changing the salt concentration on the cells
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Explain passive transport across membranes by simple diffusion amp facilitated diffusion
Simple amp facilitated diffusion are passive bull No energy input is required
There is a net movement of molecules from one side of the membrane to the other bull The motion of molecules is random (Brownian motion)
bull But there is an overall general movement in one direction
This net movement is down the concentration gradient bull From areas of high concentration to low concentration
Movement is across a selectively or partially permeable membraneDependent on size or properties some molecules can cross and not others
Simple DiffusionOccurs when the moleculersquos properties allow them
pass across the membrane
Facilitated DiffusionSome molecules cannot cross easily for example if they are polar the phospholipids of the bilayer will
repel them
The rate of diffusion is affected by bull magnitude of concentration gradient
bull SAVol ratio (more membranes more transport per unit volume)
bull Length of diffusion pathway (longer journey gives slower diffusion)
Channel proteins are integral membrane proteins that pass through the membrane
Their properties allow molecules to pass through (eg polar molecules or ions)
Activation of these channels might be voltage-gated (eg in neurons) or binding-activated
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Active transport uses energy in the form of ATP to move molecules across a selectively permeable membrane against the concentration gradient using protein pumps
Why do this To move molecules against the concentration gradient or to create a large concentration gradient across a membrane
Protein pumps These are integral passing through the membrane They are specific ndash only working with the target molecule
What happens 1 Target molecules bind to the pump 2 ATP also binds to the pump ATP is broken releasing energy and causing a
conformational (shape) change in the protein pump 3 This conformational change pushes the molecules across the membrane4 The molecule unbinds and the pump reverts back to the original shape
Examples bull Sodium-potassium pump is used to re-polarise neurons after an action potential ready to fire again
bull Proton pumps in mitochondria generate a high concentration gradient of H+ ions ready for chemiosmosis through ATP synthase used for generating ATP
Active transport uses energy in the form of ATP to move molecules across a selectively permeable membrane against the concentration gradient using protein pumps
Why do this
Protein pumps
What happens
Examples
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Annotate this diagram to explain vesicle transport amp exocytosis
Animated tutorial httpbcswhfreemancomthelifewire8econtentcat_0400504003html
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
For more resources amp links
This is a Creative Commons presentation It may be linked and embedded but not sold or re-hosted
Please consider a donation to charity via Biology4GoodClick here for more information about Biology4Good charity donations
- Slide 1
- Slide 2
- Slide 3
- Slide 4
- Slide 5
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![Page 17: Membranes and membrane transport](https://reader035.fdocuments.us/reader035/viewer/2022081417/5539934d55034680358b4a09/html5/thumbnails/17.jpg)
Stephen Taylor httpsciencevideoswordpresscom
Plasmolysis in Elodea and in onion cells 1 Set up slides of Elodea cells and onion cells with tap water medium2 Find cells under the microscope Draw and label what you see
Include magnification You might need to try different stains 3 Draw salt solution through the slides Observe and draw the effects 4 Explain the effects of changing the salt concentration on the cells
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Explain passive transport across membranes by simple diffusion amp facilitated diffusion
Simple amp facilitated diffusion are passive bull No energy input is required
There is a net movement of molecules from one side of the membrane to the other bull The motion of molecules is random (Brownian motion)
bull But there is an overall general movement in one direction
This net movement is down the concentration gradient bull From areas of high concentration to low concentration
Movement is across a selectively or partially permeable membraneDependent on size or properties some molecules can cross and not others
Simple DiffusionOccurs when the moleculersquos properties allow them
pass across the membrane
Facilitated DiffusionSome molecules cannot cross easily for example if they are polar the phospholipids of the bilayer will
repel them
The rate of diffusion is affected by bull magnitude of concentration gradient
bull SAVol ratio (more membranes more transport per unit volume)
bull Length of diffusion pathway (longer journey gives slower diffusion)
Channel proteins are integral membrane proteins that pass through the membrane
Their properties allow molecules to pass through (eg polar molecules or ions)
Activation of these channels might be voltage-gated (eg in neurons) or binding-activated
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Active transport uses energy in the form of ATP to move molecules across a selectively permeable membrane against the concentration gradient using protein pumps
Why do this To move molecules against the concentration gradient or to create a large concentration gradient across a membrane
Protein pumps These are integral passing through the membrane They are specific ndash only working with the target molecule
What happens 1 Target molecules bind to the pump 2 ATP also binds to the pump ATP is broken releasing energy and causing a
conformational (shape) change in the protein pump 3 This conformational change pushes the molecules across the membrane4 The molecule unbinds and the pump reverts back to the original shape
Examples bull Sodium-potassium pump is used to re-polarise neurons after an action potential ready to fire again
bull Proton pumps in mitochondria generate a high concentration gradient of H+ ions ready for chemiosmosis through ATP synthase used for generating ATP
Active transport uses energy in the form of ATP to move molecules across a selectively permeable membrane against the concentration gradient using protein pumps
Why do this
Protein pumps
What happens
Examples
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Annotate this diagram to explain vesicle transport amp exocytosis
Animated tutorial httpbcswhfreemancomthelifewire8econtentcat_0400504003html
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
For more resources amp links
This is a Creative Commons presentation It may be linked and embedded but not sold or re-hosted
Please consider a donation to charity via Biology4GoodClick here for more information about Biology4Good charity donations
- Slide 1
- Slide 2
- Slide 3
- Slide 4
- Slide 5
- Slide 6
- Slide 7
- Slide 8
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-
![Page 18: Membranes and membrane transport](https://reader035.fdocuments.us/reader035/viewer/2022081417/5539934d55034680358b4a09/html5/thumbnails/18.jpg)
Plasmolysis in Elodea and in onion cells 1 Set up slides of Elodea cells and onion cells with tap water medium2 Find cells under the microscope Draw and label what you see
Include magnification You might need to try different stains 3 Draw salt solution through the slides Observe and draw the effects 4 Explain the effects of changing the salt concentration on the cells
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Explain passive transport across membranes by simple diffusion amp facilitated diffusion
Simple amp facilitated diffusion are passive bull No energy input is required
There is a net movement of molecules from one side of the membrane to the other bull The motion of molecules is random (Brownian motion)
bull But there is an overall general movement in one direction
This net movement is down the concentration gradient bull From areas of high concentration to low concentration
Movement is across a selectively or partially permeable membraneDependent on size or properties some molecules can cross and not others
Simple DiffusionOccurs when the moleculersquos properties allow them
pass across the membrane
Facilitated DiffusionSome molecules cannot cross easily for example if they are polar the phospholipids of the bilayer will
repel them
The rate of diffusion is affected by bull magnitude of concentration gradient
bull SAVol ratio (more membranes more transport per unit volume)
bull Length of diffusion pathway (longer journey gives slower diffusion)
Channel proteins are integral membrane proteins that pass through the membrane
Their properties allow molecules to pass through (eg polar molecules or ions)
Activation of these channels might be voltage-gated (eg in neurons) or binding-activated
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Active transport uses energy in the form of ATP to move molecules across a selectively permeable membrane against the concentration gradient using protein pumps
Why do this To move molecules against the concentration gradient or to create a large concentration gradient across a membrane
Protein pumps These are integral passing through the membrane They are specific ndash only working with the target molecule
What happens 1 Target molecules bind to the pump 2 ATP also binds to the pump ATP is broken releasing energy and causing a
conformational (shape) change in the protein pump 3 This conformational change pushes the molecules across the membrane4 The molecule unbinds and the pump reverts back to the original shape
Examples bull Sodium-potassium pump is used to re-polarise neurons after an action potential ready to fire again
bull Proton pumps in mitochondria generate a high concentration gradient of H+ ions ready for chemiosmosis through ATP synthase used for generating ATP
Active transport uses energy in the form of ATP to move molecules across a selectively permeable membrane against the concentration gradient using protein pumps
Why do this
Protein pumps
What happens
Examples
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Annotate this diagram to explain vesicle transport amp exocytosis
Animated tutorial httpbcswhfreemancomthelifewire8econtentcat_0400504003html
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
For more resources amp links
This is a Creative Commons presentation It may be linked and embedded but not sold or re-hosted
Please consider a donation to charity via Biology4GoodClick here for more information about Biology4Good charity donations
- Slide 1
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![Page 19: Membranes and membrane transport](https://reader035.fdocuments.us/reader035/viewer/2022081417/5539934d55034680358b4a09/html5/thumbnails/19.jpg)
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Explain passive transport across membranes by simple diffusion amp facilitated diffusion
Simple amp facilitated diffusion are passive bull No energy input is required
There is a net movement of molecules from one side of the membrane to the other bull The motion of molecules is random (Brownian motion)
bull But there is an overall general movement in one direction
This net movement is down the concentration gradient bull From areas of high concentration to low concentration
Movement is across a selectively or partially permeable membraneDependent on size or properties some molecules can cross and not others
Simple DiffusionOccurs when the moleculersquos properties allow them
pass across the membrane
Facilitated DiffusionSome molecules cannot cross easily for example if they are polar the phospholipids of the bilayer will
repel them
The rate of diffusion is affected by bull magnitude of concentration gradient
bull SAVol ratio (more membranes more transport per unit volume)
bull Length of diffusion pathway (longer journey gives slower diffusion)
Channel proteins are integral membrane proteins that pass through the membrane
Their properties allow molecules to pass through (eg polar molecules or ions)
Activation of these channels might be voltage-gated (eg in neurons) or binding-activated
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Active transport uses energy in the form of ATP to move molecules across a selectively permeable membrane against the concentration gradient using protein pumps
Why do this To move molecules against the concentration gradient or to create a large concentration gradient across a membrane
Protein pumps These are integral passing through the membrane They are specific ndash only working with the target molecule
What happens 1 Target molecules bind to the pump 2 ATP also binds to the pump ATP is broken releasing energy and causing a
conformational (shape) change in the protein pump 3 This conformational change pushes the molecules across the membrane4 The molecule unbinds and the pump reverts back to the original shape
Examples bull Sodium-potassium pump is used to re-polarise neurons after an action potential ready to fire again
bull Proton pumps in mitochondria generate a high concentration gradient of H+ ions ready for chemiosmosis through ATP synthase used for generating ATP
Active transport uses energy in the form of ATP to move molecules across a selectively permeable membrane against the concentration gradient using protein pumps
Why do this
Protein pumps
What happens
Examples
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Annotate this diagram to explain vesicle transport amp exocytosis
Animated tutorial httpbcswhfreemancomthelifewire8econtentcat_0400504003html
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
For more resources amp links
This is a Creative Commons presentation It may be linked and embedded but not sold or re-hosted
Please consider a donation to charity via Biology4GoodClick here for more information about Biology4Good charity donations
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![Page 20: Membranes and membrane transport](https://reader035.fdocuments.us/reader035/viewer/2022081417/5539934d55034680358b4a09/html5/thumbnails/20.jpg)
Stephen Taylor httpsciencevideoswordpresscom
Explain passive transport across membranes by simple diffusion amp facilitated diffusion
Simple amp facilitated diffusion are passive bull No energy input is required
There is a net movement of molecules from one side of the membrane to the other bull The motion of molecules is random (Brownian motion)
bull But there is an overall general movement in one direction
This net movement is down the concentration gradient bull From areas of high concentration to low concentration
Movement is across a selectively or partially permeable membraneDependent on size or properties some molecules can cross and not others
Simple DiffusionOccurs when the moleculersquos properties allow them
pass across the membrane
Facilitated DiffusionSome molecules cannot cross easily for example if they are polar the phospholipids of the bilayer will
repel them
The rate of diffusion is affected by bull magnitude of concentration gradient
bull SAVol ratio (more membranes more transport per unit volume)
bull Length of diffusion pathway (longer journey gives slower diffusion)
Channel proteins are integral membrane proteins that pass through the membrane
Their properties allow molecules to pass through (eg polar molecules or ions)
Activation of these channels might be voltage-gated (eg in neurons) or binding-activated
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Active transport uses energy in the form of ATP to move molecules across a selectively permeable membrane against the concentration gradient using protein pumps
Why do this To move molecules against the concentration gradient or to create a large concentration gradient across a membrane
Protein pumps These are integral passing through the membrane They are specific ndash only working with the target molecule
What happens 1 Target molecules bind to the pump 2 ATP also binds to the pump ATP is broken releasing energy and causing a
conformational (shape) change in the protein pump 3 This conformational change pushes the molecules across the membrane4 The molecule unbinds and the pump reverts back to the original shape
Examples bull Sodium-potassium pump is used to re-polarise neurons after an action potential ready to fire again
bull Proton pumps in mitochondria generate a high concentration gradient of H+ ions ready for chemiosmosis through ATP synthase used for generating ATP
Active transport uses energy in the form of ATP to move molecules across a selectively permeable membrane against the concentration gradient using protein pumps
Why do this
Protein pumps
What happens
Examples
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Annotate this diagram to explain vesicle transport amp exocytosis
Animated tutorial httpbcswhfreemancomthelifewire8econtentcat_0400504003html
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
For more resources amp links
This is a Creative Commons presentation It may be linked and embedded but not sold or re-hosted
Please consider a donation to charity via Biology4GoodClick here for more information about Biology4Good charity donations
- Slide 1
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![Page 21: Membranes and membrane transport](https://reader035.fdocuments.us/reader035/viewer/2022081417/5539934d55034680358b4a09/html5/thumbnails/21.jpg)
Explain passive transport across membranes by simple diffusion amp facilitated diffusion
Simple amp facilitated diffusion are passive bull No energy input is required
There is a net movement of molecules from one side of the membrane to the other bull The motion of molecules is random (Brownian motion)
bull But there is an overall general movement in one direction
This net movement is down the concentration gradient bull From areas of high concentration to low concentration
Movement is across a selectively or partially permeable membraneDependent on size or properties some molecules can cross and not others
Simple DiffusionOccurs when the moleculersquos properties allow them
pass across the membrane
Facilitated DiffusionSome molecules cannot cross easily for example if they are polar the phospholipids of the bilayer will
repel them
The rate of diffusion is affected by bull magnitude of concentration gradient
bull SAVol ratio (more membranes more transport per unit volume)
bull Length of diffusion pathway (longer journey gives slower diffusion)
Channel proteins are integral membrane proteins that pass through the membrane
Their properties allow molecules to pass through (eg polar molecules or ions)
Activation of these channels might be voltage-gated (eg in neurons) or binding-activated
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Active transport uses energy in the form of ATP to move molecules across a selectively permeable membrane against the concentration gradient using protein pumps
Why do this To move molecules against the concentration gradient or to create a large concentration gradient across a membrane
Protein pumps These are integral passing through the membrane They are specific ndash only working with the target molecule
What happens 1 Target molecules bind to the pump 2 ATP also binds to the pump ATP is broken releasing energy and causing a
conformational (shape) change in the protein pump 3 This conformational change pushes the molecules across the membrane4 The molecule unbinds and the pump reverts back to the original shape
Examples bull Sodium-potassium pump is used to re-polarise neurons after an action potential ready to fire again
bull Proton pumps in mitochondria generate a high concentration gradient of H+ ions ready for chemiosmosis through ATP synthase used for generating ATP
Active transport uses energy in the form of ATP to move molecules across a selectively permeable membrane against the concentration gradient using protein pumps
Why do this
Protein pumps
What happens
Examples
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Annotate this diagram to explain vesicle transport amp exocytosis
Animated tutorial httpbcswhfreemancomthelifewire8econtentcat_0400504003html
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
For more resources amp links
This is a Creative Commons presentation It may be linked and embedded but not sold or re-hosted
Please consider a donation to charity via Biology4GoodClick here for more information about Biology4Good charity donations
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![Page 22: Membranes and membrane transport](https://reader035.fdocuments.us/reader035/viewer/2022081417/5539934d55034680358b4a09/html5/thumbnails/22.jpg)
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Active transport uses energy in the form of ATP to move molecules across a selectively permeable membrane against the concentration gradient using protein pumps
Why do this To move molecules against the concentration gradient or to create a large concentration gradient across a membrane
Protein pumps These are integral passing through the membrane They are specific ndash only working with the target molecule
What happens 1 Target molecules bind to the pump 2 ATP also binds to the pump ATP is broken releasing energy and causing a
conformational (shape) change in the protein pump 3 This conformational change pushes the molecules across the membrane4 The molecule unbinds and the pump reverts back to the original shape
Examples bull Sodium-potassium pump is used to re-polarise neurons after an action potential ready to fire again
bull Proton pumps in mitochondria generate a high concentration gradient of H+ ions ready for chemiosmosis through ATP synthase used for generating ATP
Active transport uses energy in the form of ATP to move molecules across a selectively permeable membrane against the concentration gradient using protein pumps
Why do this
Protein pumps
What happens
Examples
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Annotate this diagram to explain vesicle transport amp exocytosis
Animated tutorial httpbcswhfreemancomthelifewire8econtentcat_0400504003html
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
For more resources amp links
This is a Creative Commons presentation It may be linked and embedded but not sold or re-hosted
Please consider a donation to charity via Biology4GoodClick here for more information about Biology4Good charity donations
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![Page 23: Membranes and membrane transport](https://reader035.fdocuments.us/reader035/viewer/2022081417/5539934d55034680358b4a09/html5/thumbnails/23.jpg)
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Active transport uses energy in the form of ATP to move molecules across a selectively permeable membrane against the concentration gradient using protein pumps
Why do this To move molecules against the concentration gradient or to create a large concentration gradient across a membrane
Protein pumps These are integral passing through the membrane They are specific ndash only working with the target molecule
What happens 1 Target molecules bind to the pump 2 ATP also binds to the pump ATP is broken releasing energy and causing a
conformational (shape) change in the protein pump 3 This conformational change pushes the molecules across the membrane4 The molecule unbinds and the pump reverts back to the original shape
Examples bull Sodium-potassium pump is used to re-polarise neurons after an action potential ready to fire again
bull Proton pumps in mitochondria generate a high concentration gradient of H+ ions ready for chemiosmosis through ATP synthase used for generating ATP
Active transport uses energy in the form of ATP to move molecules across a selectively permeable membrane against the concentration gradient using protein pumps
Why do this
Protein pumps
What happens
Examples
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Annotate this diagram to explain vesicle transport amp exocytosis
Animated tutorial httpbcswhfreemancomthelifewire8econtentcat_0400504003html
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
For more resources amp links
This is a Creative Commons presentation It may be linked and embedded but not sold or re-hosted
Please consider a donation to charity via Biology4GoodClick here for more information about Biology4Good charity donations
- Slide 1
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![Page 24: Membranes and membrane transport](https://reader035.fdocuments.us/reader035/viewer/2022081417/5539934d55034680358b4a09/html5/thumbnails/24.jpg)
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Active transport uses energy in the form of ATP to move molecules across a selectively permeable membrane against the concentration gradient using protein pumps
Why do this To move molecules against the concentration gradient or to create a large concentration gradient across a membrane
Protein pumps These are integral passing through the membrane They are specific ndash only working with the target molecule
What happens 1 Target molecules bind to the pump 2 ATP also binds to the pump ATP is broken releasing energy and causing a
conformational (shape) change in the protein pump 3 This conformational change pushes the molecules across the membrane4 The molecule unbinds and the pump reverts back to the original shape
Examples bull Sodium-potassium pump is used to re-polarise neurons after an action potential ready to fire again
bull Proton pumps in mitochondria generate a high concentration gradient of H+ ions ready for chemiosmosis through ATP synthase used for generating ATP
Active transport uses energy in the form of ATP to move molecules across a selectively permeable membrane against the concentration gradient using protein pumps
Why do this
Protein pumps
What happens
Examples
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Annotate this diagram to explain vesicle transport amp exocytosis
Animated tutorial httpbcswhfreemancomthelifewire8econtentcat_0400504003html
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
For more resources amp links
This is a Creative Commons presentation It may be linked and embedded but not sold or re-hosted
Please consider a donation to charity via Biology4GoodClick here for more information about Biology4Good charity donations
- Slide 1
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![Page 25: Membranes and membrane transport](https://reader035.fdocuments.us/reader035/viewer/2022081417/5539934d55034680358b4a09/html5/thumbnails/25.jpg)
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Active transport uses energy in the form of ATP to move molecules across a selectively permeable membrane against the concentration gradient using protein pumps
Why do this To move molecules against the concentration gradient or to create a large concentration gradient across a membrane
Protein pumps These are integral passing through the membrane They are specific ndash only working with the target molecule
What happens 1 Target molecules bind to the pump 2 ATP also binds to the pump ATP is broken releasing energy and causing a
conformational (shape) change in the protein pump 3 This conformational change pushes the molecules across the membrane4 The molecule unbinds and the pump reverts back to the original shape
Examples bull Sodium-potassium pump is used to re-polarise neurons after an action potential ready to fire again
bull Proton pumps in mitochondria generate a high concentration gradient of H+ ions ready for chemiosmosis through ATP synthase used for generating ATP
Active transport uses energy in the form of ATP to move molecules across a selectively permeable membrane against the concentration gradient using protein pumps
Why do this
Protein pumps
What happens
Examples
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Annotate this diagram to explain vesicle transport amp exocytosis
Animated tutorial httpbcswhfreemancomthelifewire8econtentcat_0400504003html
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
For more resources amp links
This is a Creative Commons presentation It may be linked and embedded but not sold or re-hosted
Please consider a donation to charity via Biology4GoodClick here for more information about Biology4Good charity donations
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![Page 26: Membranes and membrane transport](https://reader035.fdocuments.us/reader035/viewer/2022081417/5539934d55034680358b4a09/html5/thumbnails/26.jpg)
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Active transport uses energy in the form of ATP to move molecules across a selectively permeable membrane against the concentration gradient using protein pumps
Why do this To move molecules against the concentration gradient or to create a large concentration gradient across a membrane
Protein pumps These are integral passing through the membrane They are specific ndash only working with the target molecule
What happens 1 Target molecules bind to the pump 2 ATP also binds to the pump ATP is broken releasing energy and causing a
conformational (shape) change in the protein pump 3 This conformational change pushes the molecules across the membrane4 The molecule unbinds and the pump reverts back to the original shape
Examples bull Sodium-potassium pump is used to re-polarise neurons after an action potential ready to fire again
bull Proton pumps in mitochondria generate a high concentration gradient of H+ ions ready for chemiosmosis through ATP synthase used for generating ATP
Active transport uses energy in the form of ATP to move molecules across a selectively permeable membrane against the concentration gradient using protein pumps
Why do this
Protein pumps
What happens
Examples
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Annotate this diagram to explain vesicle transport amp exocytosis
Animated tutorial httpbcswhfreemancomthelifewire8econtentcat_0400504003html
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
For more resources amp links
This is a Creative Commons presentation It may be linked and embedded but not sold or re-hosted
Please consider a donation to charity via Biology4GoodClick here for more information about Biology4Good charity donations
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![Page 27: Membranes and membrane transport](https://reader035.fdocuments.us/reader035/viewer/2022081417/5539934d55034680358b4a09/html5/thumbnails/27.jpg)
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Active transport uses energy in the form of ATP to move molecules across a selectively permeable membrane against the concentration gradient using protein pumps
Why do this To move molecules against the concentration gradient or to create a large concentration gradient across a membrane
Protein pumps These are integral passing through the membrane They are specific ndash only working with the target molecule
What happens 1 Target molecules bind to the pump 2 ATP also binds to the pump ATP is broken releasing energy and causing a
conformational (shape) change in the protein pump 3 This conformational change pushes the molecules across the membrane4 The molecule unbinds and the pump reverts back to the original shape
Examples bull Sodium-potassium pump is used to re-polarise neurons after an action potential ready to fire again
bull Proton pumps in mitochondria generate a high concentration gradient of H+ ions ready for chemiosmosis through ATP synthase used for generating ATP
Active transport uses energy in the form of ATP to move molecules across a selectively permeable membrane against the concentration gradient using protein pumps
Why do this
Protein pumps
What happens
Examples
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Annotate this diagram to explain vesicle transport amp exocytosis
Animated tutorial httpbcswhfreemancomthelifewire8econtentcat_0400504003html
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
For more resources amp links
This is a Creative Commons presentation It may be linked and embedded but not sold or re-hosted
Please consider a donation to charity via Biology4GoodClick here for more information about Biology4Good charity donations
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![Page 28: Membranes and membrane transport](https://reader035.fdocuments.us/reader035/viewer/2022081417/5539934d55034680358b4a09/html5/thumbnails/28.jpg)
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Active transport uses energy in the form of ATP to move molecules across a selectively permeable membrane against the concentration gradient using protein pumps
Why do this To move molecules against the concentration gradient or to create a large concentration gradient across a membrane
Protein pumps These are integral passing through the membrane They are specific ndash only working with the target molecule
What happens 1 Target molecules bind to the pump 2 ATP also binds to the pump ATP is broken releasing energy and causing a
conformational (shape) change in the protein pump 3 This conformational change pushes the molecules across the membrane4 The molecule unbinds and the pump reverts back to the original shape
Examples bull Sodium-potassium pump is used to re-polarise neurons after an action potential ready to fire again
bull Proton pumps in mitochondria generate a high concentration gradient of H+ ions ready for chemiosmosis through ATP synthase used for generating ATP
Active transport uses energy in the form of ATP to move molecules across a selectively permeable membrane against the concentration gradient using protein pumps
Why do this
Protein pumps
What happens
Examples
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Annotate this diagram to explain vesicle transport amp exocytosis
Animated tutorial httpbcswhfreemancomthelifewire8econtentcat_0400504003html
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
For more resources amp links
This is a Creative Commons presentation It may be linked and embedded but not sold or re-hosted
Please consider a donation to charity via Biology4GoodClick here for more information about Biology4Good charity donations
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![Page 29: Membranes and membrane transport](https://reader035.fdocuments.us/reader035/viewer/2022081417/5539934d55034680358b4a09/html5/thumbnails/29.jpg)
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Active transport uses energy in the form of ATP to move molecules across a selectively permeable membrane against the concentration gradient using protein pumps
Why do this To move molecules against the concentration gradient or to create a large concentration gradient across a membrane
Protein pumps These are integral passing through the membrane They are specific ndash only working with the target molecule
What happens 1 Target molecules bind to the pump 2 ATP also binds to the pump ATP is broken releasing energy and causing a
conformational (shape) change in the protein pump 3 This conformational change pushes the molecules across the membrane4 The molecule unbinds and the pump reverts back to the original shape
Examples bull Sodium-potassium pump is used to re-polarise neurons after an action potential ready to fire again
bull Proton pumps in mitochondria generate a high concentration gradient of H+ ions ready for chemiosmosis through ATP synthase used for generating ATP
Active transport uses energy in the form of ATP to move molecules across a selectively permeable membrane against the concentration gradient using protein pumps
Why do this
Protein pumps
What happens
Examples
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Annotate this diagram to explain vesicle transport amp exocytosis
Animated tutorial httpbcswhfreemancomthelifewire8econtentcat_0400504003html
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
For more resources amp links
This is a Creative Commons presentation It may be linked and embedded but not sold or re-hosted
Please consider a donation to charity via Biology4GoodClick here for more information about Biology4Good charity donations
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![Page 30: Membranes and membrane transport](https://reader035.fdocuments.us/reader035/viewer/2022081417/5539934d55034680358b4a09/html5/thumbnails/30.jpg)
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Active transport uses energy in the form of ATP to move molecules across a selectively permeable membrane against the concentration gradient using protein pumps
Why do this To move molecules against the concentration gradient or to create a large concentration gradient across a membrane
Protein pumps These are integral passing through the membrane They are specific ndash only working with the target molecule
What happens 1 Target molecules bind to the pump 2 ATP also binds to the pump ATP is broken releasing energy and causing a
conformational (shape) change in the protein pump 3 This conformational change pushes the molecules across the membrane4 The molecule unbinds and the pump reverts back to the original shape
Examples bull Sodium-potassium pump is used to re-polarise neurons after an action potential ready to fire again
bull Proton pumps in mitochondria generate a high concentration gradient of H+ ions ready for chemiosmosis through ATP synthase used for generating ATP
Active transport uses energy in the form of ATP to move molecules across a selectively permeable membrane against the concentration gradient using protein pumps
Why do this
Protein pumps
What happens
Examples
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Annotate this diagram to explain vesicle transport amp exocytosis
Animated tutorial httpbcswhfreemancomthelifewire8econtentcat_0400504003html
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
For more resources amp links
This is a Creative Commons presentation It may be linked and embedded but not sold or re-hosted
Please consider a donation to charity via Biology4GoodClick here for more information about Biology4Good charity donations
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![Page 31: Membranes and membrane transport](https://reader035.fdocuments.us/reader035/viewer/2022081417/5539934d55034680358b4a09/html5/thumbnails/31.jpg)
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Active transport uses energy in the form of ATP to move molecules across a selectively permeable membrane against the concentration gradient using protein pumps
Why do this To move molecules against the concentration gradient or to create a large concentration gradient across a membrane
Protein pumps These are integral passing through the membrane They are specific ndash only working with the target molecule
What happens 1 Target molecules bind to the pump 2 ATP also binds to the pump ATP is broken releasing energy and causing a
conformational (shape) change in the protein pump 3 This conformational change pushes the molecules across the membrane4 The molecule unbinds and the pump reverts back to the original shape
Examples bull Sodium-potassium pump is used to re-polarise neurons after an action potential ready to fire again
bull Proton pumps in mitochondria generate a high concentration gradient of H+ ions ready for chemiosmosis through ATP synthase used for generating ATP
Active transport uses energy in the form of ATP to move molecules across a selectively permeable membrane against the concentration gradient using protein pumps
Why do this
Protein pumps
What happens
Examples
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Annotate this diagram to explain vesicle transport amp exocytosis
Animated tutorial httpbcswhfreemancomthelifewire8econtentcat_0400504003html
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
For more resources amp links
This is a Creative Commons presentation It may be linked and embedded but not sold or re-hosted
Please consider a donation to charity via Biology4GoodClick here for more information about Biology4Good charity donations
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![Page 32: Membranes and membrane transport](https://reader035.fdocuments.us/reader035/viewer/2022081417/5539934d55034680358b4a09/html5/thumbnails/32.jpg)
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Active transport uses energy in the form of ATP to move molecules across a selectively permeable membrane against the concentration gradient using protein pumps
Why do this To move molecules against the concentration gradient or to create a large concentration gradient across a membrane
Protein pumps These are integral passing through the membrane They are specific ndash only working with the target molecule
What happens 1 Target molecules bind to the pump 2 ATP also binds to the pump ATP is broken releasing energy and causing a
conformational (shape) change in the protein pump 3 This conformational change pushes the molecules across the membrane4 The molecule unbinds and the pump reverts back to the original shape
Examples bull Sodium-potassium pump is used to re-polarise neurons after an action potential ready to fire again
bull Proton pumps in mitochondria generate a high concentration gradient of H+ ions ready for chemiosmosis through ATP synthase used for generating ATP
Active transport uses energy in the form of ATP to move molecules across a selectively permeable membrane against the concentration gradient using protein pumps
Why do this
Protein pumps
What happens
Examples
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Annotate this diagram to explain vesicle transport amp exocytosis
Animated tutorial httpbcswhfreemancomthelifewire8econtentcat_0400504003html
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
For more resources amp links
This is a Creative Commons presentation It may be linked and embedded but not sold or re-hosted
Please consider a donation to charity via Biology4GoodClick here for more information about Biology4Good charity donations
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![Page 33: Membranes and membrane transport](https://reader035.fdocuments.us/reader035/viewer/2022081417/5539934d55034680358b4a09/html5/thumbnails/33.jpg)
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Active transport uses energy in the form of ATP to move molecules across a selectively permeable membrane against the concentration gradient using protein pumps
Why do this To move molecules against the concentration gradient or to create a large concentration gradient across a membrane
Protein pumps These are integral passing through the membrane They are specific ndash only working with the target molecule
What happens 1 Target molecules bind to the pump 2 ATP also binds to the pump ATP is broken releasing energy and causing a
conformational (shape) change in the protein pump 3 This conformational change pushes the molecules across the membrane4 The molecule unbinds and the pump reverts back to the original shape
Examples bull Sodium-potassium pump is used to re-polarise neurons after an action potential ready to fire again
bull Proton pumps in mitochondria generate a high concentration gradient of H+ ions ready for chemiosmosis through ATP synthase used for generating ATP
Active transport uses energy in the form of ATP to move molecules across a selectively permeable membrane against the concentration gradient using protein pumps
Why do this
Protein pumps
What happens
Examples
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Annotate this diagram to explain vesicle transport amp exocytosis
Animated tutorial httpbcswhfreemancomthelifewire8econtentcat_0400504003html
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
For more resources amp links
This is a Creative Commons presentation It may be linked and embedded but not sold or re-hosted
Please consider a donation to charity via Biology4GoodClick here for more information about Biology4Good charity donations
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![Page 34: Membranes and membrane transport](https://reader035.fdocuments.us/reader035/viewer/2022081417/5539934d55034680358b4a09/html5/thumbnails/34.jpg)
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Active transport uses energy in the form of ATP to move molecules across a selectively permeable membrane against the concentration gradient using protein pumps
Why do this To move molecules against the concentration gradient or to create a large concentration gradient across a membrane
Protein pumps These are integral passing through the membrane They are specific ndash only working with the target molecule
What happens 1 Target molecules bind to the pump 2 ATP also binds to the pump ATP is broken releasing energy and causing a
conformational (shape) change in the protein pump 3 This conformational change pushes the molecules across the membrane4 The molecule unbinds and the pump reverts back to the original shape
Examples bull Sodium-potassium pump is used to re-polarise neurons after an action potential ready to fire again
bull Proton pumps in mitochondria generate a high concentration gradient of H+ ions ready for chemiosmosis through ATP synthase used for generating ATP
Active transport uses energy in the form of ATP to move molecules across a selectively permeable membrane against the concentration gradient using protein pumps
Why do this
Protein pumps
What happens
Examples
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Annotate this diagram to explain vesicle transport amp exocytosis
Animated tutorial httpbcswhfreemancomthelifewire8econtentcat_0400504003html
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
For more resources amp links
This is a Creative Commons presentation It may be linked and embedded but not sold or re-hosted
Please consider a donation to charity via Biology4GoodClick here for more information about Biology4Good charity donations
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![Page 35: Membranes and membrane transport](https://reader035.fdocuments.us/reader035/viewer/2022081417/5539934d55034680358b4a09/html5/thumbnails/35.jpg)
Stephen Taylor httpsciencevideoswordpresscom
Active transport uses energy in the form of ATP to move molecules across a selectively permeable membrane against the concentration gradient using protein pumps
Why do this To move molecules against the concentration gradient or to create a large concentration gradient across a membrane
Protein pumps These are integral passing through the membrane They are specific ndash only working with the target molecule
What happens 1 Target molecules bind to the pump 2 ATP also binds to the pump ATP is broken releasing energy and causing a
conformational (shape) change in the protein pump 3 This conformational change pushes the molecules across the membrane4 The molecule unbinds and the pump reverts back to the original shape
Examples bull Sodium-potassium pump is used to re-polarise neurons after an action potential ready to fire again
bull Proton pumps in mitochondria generate a high concentration gradient of H+ ions ready for chemiosmosis through ATP synthase used for generating ATP
Active transport uses energy in the form of ATP to move molecules across a selectively permeable membrane against the concentration gradient using protein pumps
Why do this
Protein pumps
What happens
Examples
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Annotate this diagram to explain vesicle transport amp exocytosis
Animated tutorial httpbcswhfreemancomthelifewire8econtentcat_0400504003html
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
For more resources amp links
This is a Creative Commons presentation It may be linked and embedded but not sold or re-hosted
Please consider a donation to charity via Biology4GoodClick here for more information about Biology4Good charity donations
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-
![Page 36: Membranes and membrane transport](https://reader035.fdocuments.us/reader035/viewer/2022081417/5539934d55034680358b4a09/html5/thumbnails/36.jpg)
Active transport uses energy in the form of ATP to move molecules across a selectively permeable membrane against the concentration gradient using protein pumps
Why do this To move molecules against the concentration gradient or to create a large concentration gradient across a membrane
Protein pumps These are integral passing through the membrane They are specific ndash only working with the target molecule
What happens 1 Target molecules bind to the pump 2 ATP also binds to the pump ATP is broken releasing energy and causing a
conformational (shape) change in the protein pump 3 This conformational change pushes the molecules across the membrane4 The molecule unbinds and the pump reverts back to the original shape
Examples bull Sodium-potassium pump is used to re-polarise neurons after an action potential ready to fire again
bull Proton pumps in mitochondria generate a high concentration gradient of H+ ions ready for chemiosmosis through ATP synthase used for generating ATP
Active transport uses energy in the form of ATP to move molecules across a selectively permeable membrane against the concentration gradient using protein pumps
Why do this
Protein pumps
What happens
Examples
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Annotate this diagram to explain vesicle transport amp exocytosis
Animated tutorial httpbcswhfreemancomthelifewire8econtentcat_0400504003html
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
For more resources amp links
This is a Creative Commons presentation It may be linked and embedded but not sold or re-hosted
Please consider a donation to charity via Biology4GoodClick here for more information about Biology4Good charity donations
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![Page 37: Membranes and membrane transport](https://reader035.fdocuments.us/reader035/viewer/2022081417/5539934d55034680358b4a09/html5/thumbnails/37.jpg)
Active transport uses energy in the form of ATP to move molecules across a selectively permeable membrane against the concentration gradient using protein pumps
Why do this
Protein pumps
What happens
Examples
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Annotate this diagram to explain vesicle transport amp exocytosis
Animated tutorial httpbcswhfreemancomthelifewire8econtentcat_0400504003html
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
For more resources amp links
This is a Creative Commons presentation It may be linked and embedded but not sold or re-hosted
Please consider a donation to charity via Biology4GoodClick here for more information about Biology4Good charity donations
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![Page 38: Membranes and membrane transport](https://reader035.fdocuments.us/reader035/viewer/2022081417/5539934d55034680358b4a09/html5/thumbnails/38.jpg)
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Annotate this diagram to explain vesicle transport amp exocytosis
Animated tutorial httpbcswhfreemancomthelifewire8econtentcat_0400504003html
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
For more resources amp links
This is a Creative Commons presentation It may be linked and embedded but not sold or re-hosted
Please consider a donation to charity via Biology4GoodClick here for more information about Biology4Good charity donations
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![Page 39: Membranes and membrane transport](https://reader035.fdocuments.us/reader035/viewer/2022081417/5539934d55034680358b4a09/html5/thumbnails/39.jpg)
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Annotate this diagram to explain vesicle transport amp exocytosis
Animated tutorial httpbcswhfreemancomthelifewire8econtentcat_0400504003html
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
For more resources amp links
This is a Creative Commons presentation It may be linked and embedded but not sold or re-hosted
Please consider a donation to charity via Biology4GoodClick here for more information about Biology4Good charity donations
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![Page 40: Membranes and membrane transport](https://reader035.fdocuments.us/reader035/viewer/2022081417/5539934d55034680358b4a09/html5/thumbnails/40.jpg)
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Annotate this diagram to explain vesicle transport amp exocytosis
Animated tutorial httpbcswhfreemancomthelifewire8econtentcat_0400504003html
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
For more resources amp links
This is a Creative Commons presentation It may be linked and embedded but not sold or re-hosted
Please consider a donation to charity via Biology4GoodClick here for more information about Biology4Good charity donations
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![Page 41: Membranes and membrane transport](https://reader035.fdocuments.us/reader035/viewer/2022081417/5539934d55034680358b4a09/html5/thumbnails/41.jpg)
Stephen Taylor httpsciencevideoswordpresscom
Annotate this diagram to explain vesicle transport amp exocytosis
Animated tutorial httpbcswhfreemancomthelifewire8econtentcat_0400504003html
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
For more resources amp links
This is a Creative Commons presentation It may be linked and embedded but not sold or re-hosted
Please consider a donation to charity via Biology4GoodClick here for more information about Biology4Good charity donations
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![Page 42: Membranes and membrane transport](https://reader035.fdocuments.us/reader035/viewer/2022081417/5539934d55034680358b4a09/html5/thumbnails/42.jpg)
Annotate this diagram to explain vesicle transport amp exocytosis
Animated tutorial httpbcswhfreemancomthelifewire8econtentcat_0400504003html
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
For more resources amp links
This is a Creative Commons presentation It may be linked and embedded but not sold or re-hosted
Please consider a donation to charity via Biology4GoodClick here for more information about Biology4Good charity donations
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![Page 43: Membranes and membrane transport](https://reader035.fdocuments.us/reader035/viewer/2022081417/5539934d55034680358b4a09/html5/thumbnails/43.jpg)
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
For more resources amp links
This is a Creative Commons presentation It may be linked and embedded but not sold or re-hosted
Please consider a donation to charity via Biology4GoodClick here for more information about Biology4Good charity donations
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![Page 44: Membranes and membrane transport](https://reader035.fdocuments.us/reader035/viewer/2022081417/5539934d55034680358b4a09/html5/thumbnails/44.jpg)
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
For more resources amp links
This is a Creative Commons presentation It may be linked and embedded but not sold or re-hosted
Please consider a donation to charity via Biology4GoodClick here for more information about Biology4Good charity donations
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![Page 45: Membranes and membrane transport](https://reader035.fdocuments.us/reader035/viewer/2022081417/5539934d55034680358b4a09/html5/thumbnails/45.jpg)
Stephen Taylor httpsciencevideoswordpresscom
Stephen Taylor httpsciencevideoswordpresscom
For more resources amp links
This is a Creative Commons presentation It may be linked and embedded but not sold or re-hosted
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![Page 46: Membranes and membrane transport](https://reader035.fdocuments.us/reader035/viewer/2022081417/5539934d55034680358b4a09/html5/thumbnails/46.jpg)
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This is a Creative Commons presentation It may be linked and embedded but not sold or re-hosted
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For more resources amp links
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