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Why the cell membrane is described as “selectively permeable”?

April 26, 2017answer Biology cell membrane Mathematics

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Why the cell membrane is described as “selectively permeable”?

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It is selectively permeable because the membrane can choose what it allows to enter and exit the cell. For instance, it may have a sodium channel that allows for sodium to flow into the cell, but won’t allow any other chemicals into the cell. This is to prevent unwanted chemicals to enter.