The cell membrane is a biological membrane that separates the interior of all cells from the outside environment. The cell membrane is selectively-permeable to ions and organic molecules and controls...
The two main functions of the cell membrane -to protect the cell's contents from its environment -to be a barrier that encloses the cell
-provides protection and support for the cell -regulates what enters and leaves the cellOne is semipermeable and the other is selectively permeable.
it is to not let the bad stuff in and let good things in
It controls the entry and exit of substances.
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