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Definition
| the diffusion of water across a selectively permeable membrane |
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Definition
| a solution in which the concentration of dissolved substances outside the cell is the same as the concentration inside the cell |
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Definition
| a solution in which the concentration of dissolved substances outside the cell is lower than the concentration inside the cell |
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Definition
| a solution in which the concentration of dissolved substances outside the cell is higher than the concentration inside the cell |
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Term
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Definition
| this is the movement of particles across the plasma membrane by diffusion; it requires no energy |
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Term
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Definition
| the passive transport of materials across the plasma membrane with the aid of transport proteins |
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Definition
| this is the movement of particles across the plasma membrane against the concentration gradient; it requires energy |
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Definition
| process by which a cell takes in material by forming a vacuole around it. |
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Definition
| the process by which a cell expels wastes from a vacuole |
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Definition
| the process of maintaining balance in the cell's environment |
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Term
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Definition
| a protein that transports substances out of or into a cell across the cell membrane |
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