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| process by which molecules tend to move from an area where thay are more concentrated to an area where they are less concentrated[image] |
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| property of biological membranes that allow only certain substances to pass through them[image] |
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| diffusion of waterthrough a selectively permeable membrane |
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| Pushes "out" of the cell. waste can be released from a vacule to the outside of the cell |
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| ions are pumped into the or out of the cell ( though transport proteins) against the concentration gradeint |
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