The plasma membrane is composed of
A)a bilayer of proteins.
B)a bilayer of phospholipids.
C)carbohydrate molecules.
D)carbohydrates and proteins.
E)carbohydrates and lipids.

Question

Quizplus · Accepted Answer

The plasma membrane is composed of a bilayer of phospholipids, which form a fluid and flexible barrier around the cell. This bilayer also contains embedded proteins, but they are not the main component of the membrane. Carbohydrate molecules can also be found on the surface of the membrane, but they do not make up the bulk of the membrane structure.

The Plasma Membrane Is Composed of