Which definition is the best for "semipermeable membrane"? It is a barrier that prevents materials from moving from one side to the other. It is a barrier that allows materials to move freely from one side to the other. It is a barrier with tiny openings that let some, but not all, materials pass through. It is a barrier that helps materials move from one side to the other.
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The real answer is It is a barrier with tiny openings that let some, but not all, materials pass through.
Explanation:
a semipermeable membrane is vital for cells to survive because it means that certain molecules or ions can move through them by different processes e.g. via passive or facilitated diffusion, or by active or passive transport.Essentially it allows the cell the ability to carry out vital functions.
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