Question

Why do cells have a plasma membrane?

to distinguish plants from animals


to separate proteins from the nucleus


to define the size of the cell


to separate the inside of the cell from its environment

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.

Step-by-step explanation:

Answer 2

to separate the inside of the cell from its environment

Step-by-step explanation:

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