Question

1. what is the main function of the cell membrane? *

to make energy for the cell
to store nutrients for the cell
to control what enters and leaves the cell
to protect dna from damage

Explanation:

The cell - membrane is a selectively permeable barrier. Its main role is to regulate the movement of substances in and out of the cell, allowing essential nutrients in and waste out while keeping harmful substances at bay.

Answer:

To control what enters and leaves the cell