Cell Membranes

The main function of the cell membrane is to regulate the movement of substances in and out of the cell.

The cell membrane is composed of phospholipids, proteins, and cholesterol.

The cell membrane maintains its structure and integrity through the arrangement of phospholipids in a bilayer and the presence of cholesterol molecules.

<p>Cholesterol helps regulate the fluidity and stability of the cell membrane.</p> Signup and view all the answers

<p>Lipid rafts are specific regions of the cell membrane enriched in cholesterol and sphingolipids. They play a role in organizing signaling molecules and membrane proteins.</p> Signup and view all the answers

<p>Transmembrane proteins span across the lipid bilayer of the cell membrane and serve as channels, receptors, and transporters for various substances.</p> Signup and view all the answers