Cell Membrane Maintains homeostasis by regulating the movement of molecules in and out of the cell.

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Cell Membrane Maintains homeostasis by regulating the movement of molecules in and out of the cell

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Transcript of Cell Membrane Maintains homeostasis by regulating the movement of molecules in and out of the cell.

Page 1: Cell Membrane Maintains homeostasis by regulating the movement of molecules in and out of the cell.

Cell MembraneMaintains homeostasis by regulating the movement of molecules in

and out of the cell

Page 2: Cell Membrane Maintains homeostasis by regulating the movement of molecules in and out of the cell.

Fluid Mosaic Model

• Polar heads are orientated to the aqueous solution (inside and outside of cell)

• Non polar tails are orientated towards one another

• Integral proteins are embedded to form a mosaic

Page 3: Cell Membrane Maintains homeostasis by regulating the movement of molecules in and out of the cell.
Page 4: Cell Membrane Maintains homeostasis by regulating the movement of molecules in and out of the cell.

Membrane Proteins

• Channel Proteins (transport)• Carrier Proteins (transport)• Receptor Proteins (signal transduction)• Cell Recognition Proteins (glycoprotein)• Enzymatic Proteins• Intercellular Joining• Attachment for Cytoskeleton

Page 5: Cell Membrane Maintains homeostasis by regulating the movement of molecules in and out of the cell.
http://www.wisc-online.com/objects/index_tj.asp?objID=AP1101
Page 6: Cell Membrane Maintains homeostasis by regulating the movement of molecules in and out of the cell.

Membrane Permeability

• Impermeable• Permeable• Differentially/Selectively Permeable

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Terms to know

• Osmotic pressure• Turgor Pressure• Tonicity• Isotonic• Hypotonic• Hypertonic• Plasmolysis• Creanation

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Methods of Transport Across The Cell Membrane

Passive Transport

Page 9: Cell Membrane Maintains homeostasis by regulating the movement of molecules in and out of the cell.
http://highered.mcgraw-hill.com/sites/dl/free/0072421975/196646/lw02_diffusion_final.html
Page 10: Cell Membrane Maintains homeostasis by regulating the movement of molecules in and out of the cell.

Rate of Diffusion

• Temperature increase• Increased concentration gradient• Increased membrane permeability• Smaller molecule size

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Osmosis

• Diffusion of water through a semi permeable membrane

Page 12: Cell Membrane Maintains homeostasis by regulating the movement of molecules in and out of the cell.
Page 13: Cell Membrane Maintains homeostasis by regulating the movement of molecules in and out of the cell.
http://www2.nl.edu/jste/osmosis.htm
Page 14: Cell Membrane Maintains homeostasis by regulating the movement of molecules in and out of the cell.
http://ccollege.hccs.edu/instru/Biology/AllStudyPages/Diffusion_Osmosis/Elodeagif.swf
Page 15: Cell Membrane Maintains homeostasis by regulating the movement of molecules in and out of the cell.

Facilitated Transport

• Movement of molecules along the concentration gradient with the aid of carrier proteins

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Page 17: Cell Membrane Maintains homeostasis by regulating the movement of molecules in and out of the cell.

Active Transport

• Movement of molecules against the concentration gradient using carrier proteins and ATP

Page 18: Cell Membrane Maintains homeostasis by regulating the movement of molecules in and out of the cell.
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Active Transport

• Endocytosis– Phagocytosis– Pinocytosis

• Exocytosis

Page 20: Cell Membrane Maintains homeostasis by regulating the movement of molecules in and out of the cell.

Animation Review

http://programs.northlandcollege.edu/biology/Biology1111/animations/transport1.html

THE CELL AND ITS ENVIRONMENT. HOMEOSTASIS Homeostasis- “ steady state” or balance cells constantly seek homeostasis The Cell Membrane is responsible for.

THE CELL AND ITS ENVIRONMENT. HOMEOSTASIS Homeostasis- “ steady state” or balance cells constantly seek homeostasis The Cell Membrane is responsible for.

4.3 Membrane Structure. Membrane Function Surrounds all cells Regulates cell’s internal environment ◦ Maintains HOMEOSTASIS Maintains the same conditions.

4.3 Membrane Structure. Membrane Function Surrounds all cells Regulates cell’s internal environment ◦ Maintains HOMEOSTASIS Maintains the same conditions.

Plasma Membrane Notes. CHARACTERISTICS: Maintains homeostasis (balance with environment) Selective permeability – allows some molecules into the cell.

Plasma Membrane Notes. CHARACTERISTICS: Maintains homeostasis (balance with environment) Selective permeability – allows some molecules into the cell.

Programmed Cell Death Initiation and Execution in Budding ... · organelles in budding yeast. External origins of ROS The cell maintains redox homeostasis by balancing low-level ROS

Programmed Cell Death Initiation and Execution in Budding ... · organelles in budding yeast. External origins of ROS The cell maintains redox homeostasis by balancing low-level ROS

The Urinary System. Functions of the Urinary System Maintains homeostasis of blood Maintains homeostasis of blood –Remove waste products –Restore selected.

The Urinary System. Functions of the Urinary System Maintains homeostasis of blood Maintains homeostasis of blood –Remove waste products –Restore selected.

Phospholipid-bilayer Around outside of cell’s cytoplasm Semi permeable Regulates what enters and leaves the cell. Maintains Homeostasis Protects.

Phospholipid-bilayer Around outside of cell’s cytoplasm Semi permeable Regulates what enters and leaves the cell. Maintains Homeostasis Protects.

› cms › lib › NC01001395 … · Web viewNotes for Diffusion, Osmosis and Transport across the Cell’s Plasma Membrane Recall That t he Membrane Maintains Homeostasis The cell

› cms › lib › NC01001395 … · Web viewNotes for Diffusion, Osmosis and Transport across the Cell’s Plasma Membrane Recall That t he Membrane Maintains Homeostasis The cell

Diffusion & Osmosis. Cell exist in a constantly changing environment. Homeostasis: Biological balance, or stability that a cell maintains with its environment.

Diffusion & Osmosis. Cell exist in a constantly changing environment. Homeostasis: Biological balance, or stability that a cell maintains with its environment.

Cell Membarane Also known as Plasma Membrane and Phospholipid Bi-layer Defines the shape of the cell. Maintains Homeostasis (controls what goes in and.

Cell Membarane Also known as Plasma Membrane and Phospholipid Bi-layer Defines the shape of the cell. Maintains Homeostasis (controls what goes in and.

Homeostasis and Control Systems. Homeostasis: Process that regulates and maintains a constant internal environment regardless of the external environment.

Homeostasis and Control Systems. Homeostasis: Process that regulates and maintains a constant internal environment regardless of the external environment.

Cell Transport and Homeostasis...Cell Transport •In order for cells to maintain homeostasis they have to control what enters and leaves the cell. •Homeostasis-maintaining an internal

Cell Transport and Homeostasis...Cell Transport •In order for cells to maintain homeostasis they have to control what enters and leaves the cell. •Homeostasis-maintaining an internal

d2jw81rkebrcvk.cloudfront.netd2jw81rkebrcvk.cloudfront.net/assets.navigate...the cell membrane, the cytoplasm, and the nucleus. (pp 335-336) Discuss how the body maintains homeostasis.

d2jw81rkebrcvk.cloudfront.netd2jw81rkebrcvk.cloudfront.net/assets.navigate...the cell membrane, the cytoplasm, and the nucleus. (pp 335-336) Discuss how the body maintains homeostasis.

AP Biology Cell Communication and Homeostasis AP Biology Dynamic Homeostasis.

AP Biology Cell Communication and Homeostasis AP Biology Dynamic Homeostasis.

The Cell and Fluid Homeostasis

The Cell and Fluid Homeostasis

. Chapter 6: A Tour of the Cell Cell theory Cell theory Cell organization and homeostasis Cell organization and homeostasis Studying cells – microscopy.

. Chapter 6: A Tour of the Cell Cell theory Cell theory Cell organization and homeostasis Cell organization and homeostasis Studying cells – microscopy.

Cellular Transport 8.1 Notes. I. Plasma Membrane maintains homeostasis in the cell Controls the passage of materials into and out of the cell.

Cellular Transport 8.1 Notes. I. Plasma Membrane maintains homeostasis in the cell Controls the passage of materials into and out of the cell.

RAV-Like1 Maintains Brassinosteroid Homeostasis via the ...RAV-Like1 Maintains Brassinosteroid Homeostasis via the Coordinated Activation of BRI1 and Biosynthetic Genes in Rice C W

RAV-Like1 Maintains Brassinosteroid Homeostasis via the ...RAV-Like1 Maintains Brassinosteroid Homeostasis via the Coordinated Activation of BRI1 and Biosynthetic Genes in Rice C W

Homeostasis and Cell Transport

Homeostasis and Cell Transport

Chapter 5 Homeostasis and Transport. What part of a cell maintains it homeostasis? Cell Membrane is selectively permeable Regulates what goes in and out.

Chapter 5 Homeostasis and Transport. What part of a cell maintains it homeostasis? Cell Membrane is selectively permeable Regulates what goes in and out.

CELL MEMBRANE: Structure and Function. Membrane Function: Supports cell contents by holding the cell together. Maintains cellular homeostasis by regulating.

CELL MEMBRANE: Structure and Function. Membrane Function: Supports cell contents by holding the cell together. Maintains cellular homeostasis by regulating.