Question

write the function of cell membranes
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Answer 1

The plasma membrane, or the cell membrane, provides protection for a cell. It also provides a fixed environment inside the cell, and that membrane has several different functions. One is to transport nutrients into the cell and also to transport toxic substances out of the cell.

Answer 2

(1) they keep toxic substances out of the cell.

(2) they contain receptors and channels that allow specific molecules, such as ions, nutrients, wastes, and metabolic products.