Question

what is the cell membrane made up of?
a cytosol
b lipids
c nucleic acids

Explanation:

The cell - membrane is primarily composed of a lipid bilayer, which provides a barrier and regulates the movement of substances in and out of the cell. Cytosol is the fluid inside the cell, and nucleic acids are involved in genetic information storage and transfer, not in the structure of the cell - membrane.

Answer:

B. lipids