BIO NMDCAT cell membrane

nmdcat.online July 8, 2026

What is the primary function of cholesterol in the mammalian cell membrane?

A. To facilitate active transport

B. To act as a site for enzyme activity

C. To modulate membrane fluidity and stability

✓

D. To serve as a marker for cell recognition

📝 Explanation

Cholesterol acts as a temperature buffer, preventing excessive fluidity at high temperatures and excessive rigidity at low temperatures.

📖 Additional Information

To facilitate active transport
To act as a site for enzyme activity
To modulate membrane fluidity and stability
To serve as a marker for cell recognition

Cholesterol acts as a temperature buffer, preventing excessive fluidity at high temperatures and excessive rigidity at low temperatures.

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