Active Transport Biology Unit V - Regulation. Active Transport Molecules move UP the concentration...

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Active Transport Biology Unit V - Regulation

Transcript of Active Transport Biology Unit V - Regulation. Active Transport Molecules move UP the concentration...

Page 1: Active Transport Biology Unit V - Regulation. Active Transport Molecules move UP the concentration gradient Molecules move from an area of lower concentration.

Active Transport

BiologyUnit V - Regulation

Page 2: Active Transport Biology Unit V - Regulation. Active Transport Molecules move UP the concentration gradient Molecules move from an area of lower concentration.

Active Transport

• Molecules move UP the concentration gradient

• Molecules move from an area of lower concentration to an area of higher concentration

• Requires energy (ATP)

Page 3: Active Transport Biology Unit V - Regulation. Active Transport Molecules move UP the concentration gradient Molecules move from an area of lower concentration.

Active Transport• Thousands of proteins are

embedded in the cell's lipid bilayer.

• These proteins do much of the work in active transport.

• They are positioned to cross the membrane so one part is on the inside of the cell and one part is on the outside.

Page 4: Active Transport Biology Unit V - Regulation. Active Transport Molecules move UP the concentration gradient Molecules move from an area of lower concentration.

Example of Active Transport

Page 5: Active Transport Biology Unit V - Regulation. Active Transport Molecules move UP the concentration gradient Molecules move from an area of lower concentration.

Active Transport

• Occurs a lot in neurons. • The membrane proteins

are constantly pumping ions in and out to get the membrane of the neuron ready to transmit electrical impulses.

Page 6: Active Transport Biology Unit V - Regulation. Active Transport Molecules move UP the concentration gradient Molecules move from an area of lower concentration.

Passive & Active Transport

Page 7: Active Transport Biology Unit V - Regulation. Active Transport Molecules move UP the concentration gradient Molecules move from an area of lower concentration.

DIFFUSION OSMOSIS ACTIVE TRANSPORT

Energy requirements

ATP not required ATP not required ATP required

Distance of travel

Solutes and gases- long distances

Solvent (water)- short distances Short distances

Speed of process

Rapid in gases, slow in solution

Slow process Rapid process

Definition

Transport of gases or dissolved substances (solutes) in solution from a region of high concentration to a region of lower concentration of the transported substance.

Transport of a solvent (water) through a semipermeable membrane from a solution of low solute concentration to a solution of higher solute concentration.

Transport of a substance from lower to higher concentration of that substance, using energy from the cell, through a living cell membrane.

Examples

Uptake of oxygen by a cell performing aerobic respiration. Oxygen continues to diffuse into the cell as O2 is removed by

respiration.

The movement of water into cells of a marine (salt water adapted) animal placed in fresh water. May eventually cause cells to swell and burst.

Transport of glucose against its concentration gradient from the gut lumen into the cells lining the intestine.


Passive Transport - nausetschools.org · Passive Transport •Passive transport is the net movement of molecules from high concentration to low concentration without the direct input

Passive Transport - nausetschools.org · Passive Transport •Passive transport is the net movement of molecules from high concentration to low concentration without the direct input

Cell Membrane & Homeostasis. DEFINITIONS: Diffusion: movement of molecules from region of high concentration to low concentration Diffusion: movement.

Cell Membrane & Homeostasis. DEFINITIONS: Diffusion: movement of molecules from region of high concentration to low concentration Diffusion: movement.

Heat Transfer. Heat transfer Everything is made of molecules. When molecules gain energy they move faster and create more heat. (The faster the molecules.

Heat Transfer. Heat transfer Everything is made of molecules. When molecules gain energy they move faster and create more heat. (The faster the molecules.

1 Chapter 5 The Gas Laws. 2 Pressure Force per unit area. Force per unit area. Gas molecules fill container. Gas molecules fill container. Molecules move.

1 Chapter 5 The Gas Laws. 2 Pressure Force per unit area. Force per unit area. Gas molecules fill container. Gas molecules fill container. Molecules move.

Cell Membrane & THE WAYS MOLECULES MOVE Chapter 7-3.

Cell Membrane & THE WAYS MOLECULES MOVE Chapter 7-3.

CHAPTER 8: THERMAL PROCESS (continued). Diffusion Process The process of materials move from high concentration regions to low concentration regions,

CHAPTER 8: THERMAL PROCESS (continued). Diffusion Process The process of materials move from high concentration regions to low concentration regions,

FACILITATED DIFFUSION A type of passive transport that does not require energy to move molecules down their concentration gradient uses membrane proteins.

FACILITATED DIFFUSION A type of passive transport that does not require energy to move molecules down their concentration gradient uses membrane proteins.

All cells need ENERGY to: Digest Molecules Build Molecules Move Molecules Organize Molecules.

All cells need ENERGY to: Digest Molecules Build Molecules Move Molecules Organize Molecules.

Transport Across the Cell Membrane...Active Transport Some molecules (ions) move across the cell membrane against concentration gradient It is energy (ATP) dependent movement of substances

Transport Across the Cell Membrane...Active Transport Some molecules (ions) move across the cell membrane against concentration gradient It is energy (ATP) dependent movement of substances

OSMOSIS and DIFFUSION. Molecules are always moving Molecules move randomly and bump into each other and other barriers.

OSMOSIS and DIFFUSION. Molecules are always moving Molecules move randomly and bump into each other and other barriers.

7.4 Cellular Transport - Oak Park Independent Cellular Transport 7.4 Cellular Transport Passive Transport ... ·molecules or ions move down their concentration ... D is a type of active

7.4 Cellular Transport - Oak Park Independent Cellular Transport 7.4 Cellular Transport Passive Transport ... ·molecules or ions move down their concentration ... D is a type of active

Gases All molecules move to some extent. –Vibrational –Rotational –Translational *

Gases All molecules move to some extent. –Vibrational –Rotational –Translational *

Transport of Molecules. concentration Where is there a higher concentration of yellow dots? AB.

Transport of Molecules. concentration Where is there a higher concentration of yellow dots? AB.

Gummy Bear Chemistry and Osmosis and Equilibrium •When there are an unequal number of molecules inside and outside the cell, the concentration difference causes water to move across

Gummy Bear Chemistry and Osmosis and Equilibrium •When there are an unequal number of molecules inside and outside the cell, the concentration difference causes water to move across

Active Transport MOVING MOLECULES ACROSS THEIR CONCENTRATION GRADIENT.

Active Transport MOVING MOLECULES ACROSS THEIR CONCENTRATION GRADIENT.

Cell Membranes & Passive Transport - Houston …€¦ ·  · 2015-10-07Active Transport Molecules move across the membrane AGAINST their concentration gradient (Low to High) ENERGY

Cell Membranes & Passive Transport - Houston …€¦ ·  · 2015-10-07Active Transport Molecules move across the membrane AGAINST their concentration gradient (Low to High) ENERGY

Diffusion - Review Molecules move from areas of high concentration to areas of low concentration How do diffusion/osmosis/active transport differ? .

Diffusion - Review Molecules move from areas of high concentration to areas of low concentration How do diffusion/osmosis/active transport differ? .

Cell Structures Movement & Organelles. Diffusion Movement of molecules from an area of high concentration to an area of low concentration Move to.

Cell Structures Movement & Organelles. Diffusion Movement of molecules from an area of high concentration to an area of low concentration Move to.

Robust concentration determination of optically active molecules in

Robust concentration determination of optically active molecules in

Diffusion vs. Effusion Diffusion - The tendency of the molecules of a given substance to move from regions of higher concentration to regions of lower.

Diffusion vs. Effusion Diffusion - The tendency of the molecules of a given substance to move from regions of higher concentration to regions of lower.