Question

how does the cell membrane protect the cell

Answer 1

The cell membrane, or plasma membrane, surrounds and protects the internal environment of a cell; however, this is not its only function. A cell membrane also determines what materials enter or leave the cell. ... Scattered in the lipid bilayer are cholesterol molecules, which help to keep the membrane fluid consistent.

Answer 2

The primary function of the plasma membrane is to protect the cell from its surroundings. Composed of a phospholipid bilayer with embedded proteins, the plasma membrane is selectively permeable to ions and organic molecules and regulates the movement of substances in and out ofcells.