Which of the following describes the plasma membrane?

Question

Quizplus · Accepted Answer

The plasma membrane is composed of a phospholipid bilayer that surrounds the cell. This double-layered membrane has hydrophilic heads facing outward and hydrophobic tails facing inward, creating a selective barrier that regulates the movement of substances in and out of the cell.

Option A is incorrect because the nuclear membrane is a separate membrane that surrounds the nucleus, not the plasma membrane that surrounds the entire cell.

Option B is incorrect because the plasma membrane is primarily composed of phospholipids, not proteins.

Option D is incorrect because cristae are found inside the mitochondria, not the plasma membrane.

Which of the Following Describes the Plasma Membrane