Term
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Definition
| the net movement of the particles of a substance where they're more concentrated to where there is less concentration |
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Term
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Definition
| point out which the # of diffusing molecules moving in one directionis equal to the # moving in the opposite direction |
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Term
| selectively permeable membrane |
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Definition
| the membrane that allows some substances to pass more easily than others and blocks the passage of some substances |
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Term
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Definition
| diffusions across the membrane requiring only the random motion of molecules with no energy expended by the cell |
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Term
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Definition
| process where transport proteins provide a pathway for certain molecules to pass through the membrane |
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Term
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Definition
| the diffusion of water through a membrane |
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Term
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Definition
| solution with higher concentration of solute |
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Term
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Definition
| solution with lower solute concentration |
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Term
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Definition
| having a solute concentration = to another solution (neautral) |
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Term
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Definition
| when a cell expends energy to move molecules and ions across a membrane |
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Term
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Definition
| small membrane stacks that specialize in moving products into and out of and within a cell |
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Term
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Definition
| process of exporting from a cell by a vesicle fusing with the plasma membrane |
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