The plasma membrane is composed primarily of
A) proteins and microtubules.
B) lipids and actin filaments.
C) lipids and microtubules.
D) lipids and proteins.
E) proteins and carbohydrates.

Question

Quizplus · Accepted Answer

The plasma membrane is primarily composed of lipids (phospholipids) and proteins. While there may be some carbohydrates present, they are not a primary component of the plasma membrane. Actin filaments and microtubules are components of the cytoskeleton, which is found inside the cell and provides structural support, but they are not major components of the plasma membrane.

The Plasma Membrane Is Composed Primarily of