Cell Membranes

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  • Created by: cassie97
  • Created on: 07-05-14 15:12
Function of the cell membrane.
Separates living cell from non living surroundings.
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Glycoprotien
Carbohydrate and protien.
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Glycolipid
Carbohydrate and lipid.
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Transmembrane protien
Transport molecules and ions.
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Peripheral protien
Loosely bound to membrane surface/cell surface identity marker.
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Cholestral
Affects fluidity of the membrane and prevents too much movement in the bi-layer. Too much cholestral stops movement.
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Filament of cytoskeleton
Runs through cytoplams giving the cell a loose structure.
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Diffusion
Movement of lipid soluble molecules or ions from a region of high to low concentration through the phospholipid bi-layer.
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Facilitated diffusion
Movement of polar molecules or ions from a region of high to low concentration through protein channels.
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Active transport
Movement of molecules against a concentration gradient from a region of low to high concentration through protein pumps. Requires energy as ATP and cannot work in the presence of a respiratory inhibitor, eg. cyanide.
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Exocytosis
The movement of bulk material out of the cell.
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Endocytosis
The movement of bulk material into the cell.
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Phagocytosis
Solid material in.
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Pinocytosis
Liquid material in.
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Osmosis
A particular form of diffusion in which water molecules move down a W gradient, from a high W to a low W, through a selectively permeable membrane.
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Water Potential
Water has the tendency to move from a region of high water concentration to low water concentration.
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Pure water has the value...
0kPa
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Pressure Potential
Pressure on the solution applied by the cell wall
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Other cards in this set

Card 2

Front

Glycoprotien

Back

Carbohydrate and protien.

Card 3

Front

Glycolipid

Back

Preview of the front of card 3

Card 4

Front

Transmembrane protien

Back

Preview of the front of card 4

Card 5

Front

Peripheral protien

Back

Preview of the front of card 5
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