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28 May, 21:34

Why membranes are selectively permeable

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  1. 28 May, 21:57
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    it only lets certain things in and out
  2. 28 May, 22:03
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    The cell membrane is selectively permeable, meaning it only lets certain things in and out. The structure of the phospholipid bilayer prevents random things from drifting through the membrane, and proteins act like doors, letting the right stuff in and out.
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