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When a membrane lets some things in but not others we
say it is:
O porous
Oselectively permeable
O permeable
○ polarized


Sagot :

Final answer:

Cell membranes are selectively permeable, allowing some molecules to pass while restricting others essential for cell function.


Explanation:

Selectively permeable membranes allow some substances to pass through while blocking others. For example, cell membranes permit water to cross but require special mechanisms for other molecules. This characteristic is crucial for various biological processes.


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