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Definition
55% Protein
42% Lipid
3% Carbohydrate |
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Term
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Definition
Passive; spontaneous movement across membrane according to concentration gradient; occurs until equilibrium is reached
ALL LIFE WANTS TO BE IN EQUILIBRIUM |
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Term
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Definition
difference in ion/molecule concentrations between two regions.
ALL LIFE WANTS TO BE IN EQUILIBRIUM |
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Definition
| using ion channels and protein carriers to move across the membrane |
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Term
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Definition
special diffusion: diffusion over a WATER concentration gradient Ratio of water to solvent NOT Volume of water!! |
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Definition
| equal amounts of water enter and leave cells |
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Definition
| More water enters than leaves; cells swell |
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Definition
| More water leaves than enters; cells shrink |
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Term
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Definition
| forcing of molecules across membranes using hydrostatic pressure; movement from high pressure to low pressure |
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Term
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Definition
| movement of molecules from areas of low concentration to high concentration |
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Term
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Definition
| "cell eating" - taking in of solid material into a cell |
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Term
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Definition
| "cell drinking" - cell taking in small amounts of water and solutes (think pino noir - sip!) |
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Definition
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Definition
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Term
| Limiting factors on membrane crossing |
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Definition
Lipid Solubility
Charge on atom/molecule
Size |
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