SSC
BIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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What does it mean that a cell membrane is semi-permeable?
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It allows all substances in
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It allows some substances in
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It allows nothing in
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None of the above
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Explanation:
Detailed explanation-1: -The plasma membrane is known as semi-permeable because it regulates the movement of substances in and out of the cell. This means that the plasma membrane allows the entry of only some substances and prevents the movement of some other materials.
Detailed explanation-2: -A semipermeable membrane allows some molecules to pass through it depending on the attributes of the molecules such as size or quantity. The process that occurs when a semipermeable membrane allows molecules to pass through is called diffusion.
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