Cell Membranes (Definition)

Fluid Mosaic Model
"Fluid" - Phospholipds are constantly moving. "Mosaic" - proteins are scattered.
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Channel Protein
A protein that allows facilitated diffusion of charged particles.
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Carrier Protein
A protein that allows facilitated diffusion of large molecules.
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Co-Transport Protein
A type of carrier protein that binds to two molecules are the same time - used in active transport.
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Glycoprotein
A protein that has a carbohydrate attached to it -
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Glycolipid
A lipid that has a carbohydrate attached to it -
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Cholestrol
A type of lipid present in cell membranes -
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Simple Diffusion (Lipid Diffusion)
The net movement of molecules from an area of high to low concentration. (DOWN its concentration gradient)
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Facilitated Diffusion
The net movement of molecules from an area of high to low concentration using a channel and/or carrier protein. (DOWN its concentration gradient)
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Osmosis
The net movement of water molecules from an area of low to high water potential through a partially permeable membrane.
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Water potential
The likelihood of water molecules to diffuse out of or into a solution.
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Hypotonic Solution
High water potential of solutes. (Low concentration) so water moves INTO the cell via osmosis.
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Isotonic Solution
Same water potential of solutes. (Same concentration) so no net movement of water.
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Hypertonic Solution
Low water potential of solutes. (High concentration) so water move OUT of the cell via osmosis.
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Active Transport
The movement of molecules/ions across a plasma membrane from a low to high concentration which requires energy in the form of ATP and a carrier protein.
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Other cards in this set

Card 2

Front

A protein that allows facilitated diffusion of charged particles.

Back

Channel Protein

Card 3

Front

A protein that allows facilitated diffusion of large molecules.

Back

Preview of the back of card 3

Card 4

Front

A type of carrier protein that binds to two molecules are the same time - used in active transport.

Back

Preview of the back of card 4

Card 5

Front

A protein that has a carbohydrate attached to it -

Back

Preview of the back of card 5
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