Question

What is the role of sterol in cell membrane?

• A. Stability
• B. Communication with other cells
• C. Secretion
• D. Transport

Answer 1

Answer: (A)

The role of sterol in a cell membrane is to provide stability. Sterols are steroids with $8-10$ carbon long aliphatic side chain at carbon $17$ and at least one alcoholic hydroxyl.
Cholesterol $\left(C_{27}{H}_{45}OH\right)$ is a common sterol found in many animal cell membranes.