The cell membrane is a double layer of
A) protein
B) phospholipid
C) carbohydrate
D) phospholipid and carbohydrate
E) protein and carbohydrate

Question

Quizplus · Accepted Answer

The cell membrane is composed of a double layer of phospholipids. These phospholipids have hydrophilic (water-loving) heads and hydrophobic (water-fearing) tails, which create a barrier between the inside and outside of the cell. The phospholipid bilayer also contains embedded proteins, which help to regulate the passage of molecules into and out of the cell. While carbohydrates may be present on the surface of the membrane, they do not make up the structure of the membrane itself.

The Cell Membrane Is a Double Layer of