Term
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Definition
| movement of molecules from high to low concentration |
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Term
| Why does Diffusion happen? |
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Definition
| Molecules are always moving, allows them to move w/out energy |
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Term
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Definition
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Term
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Definition
| equal balance - same number of molecules on each side of membrane, no difference |
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Term
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Definition
| allows some molecules to pass while acting as a barrier to other molecules |
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Term
| Whether molecules pass through a membrane depends on: |
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Definition
| Size and Permeability/Solubility |
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Term
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Definition
| difference in concentration or # of molecules between two areas separated by membrane |
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Term
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Definition
| mass of solute/volume of solvent |
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Term
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Definition
| substance being dissolved |
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Term
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Definition
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Term
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Definition
| diffusion of Water through a semi-permeable membrane |
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Term
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Definition
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Term
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Definition
| less concentration of solutes causes cell to take in water |
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Term
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Definition
| more concentration of solutes causes cell to lose water |
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Term
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Definition
| going with concentration gradient |
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Term
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Definition
| goes against concentration gradient |
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Term
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Definition
| watery substance surrounding the cell |
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Term
| Functions of Cell Membrane |
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Definition
| Provides physical isolation, regulates what goes in and out, sensitivity to environment, structural support |
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Term
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Definition
hydrophilic head, hydrophobic legs
head - phosphate, legs - fatty acid |
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Term
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Definition
| membrane of cell, two layers of lipids |
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Term
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Definition
| uses protein channels, passive transport |
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Term
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Definition
| phospholipids and proteins |
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