Question

Which of the following describes a major role of cholesterol in the structure of a membrane?

A. It helps control the fluidity of the membrane
B. It attaches proteins to the plasma membrane
C. It is an attachment point for most of the carbohydrate on the cell surface
D. It regulates the enzymes that synthesize new lipid bilayer membranes

Answer 1

Cholesterol helps control the fluidity of the cellular membrane. Hence the correct answer is option A

Step-by-step explanation:

Cholesterol plays a major role in the structure of a cellular membrane by helping control the fluidity of the membrane. It is present in animal plasma membranes and acts as a buffer, preventing temperature changes from affecting membrane fluidity too much. The amount of cholesterol in the membrane can vary based on the cell's environment.

Hence the correct answer is option A