Question

Study the structural formula given below and identify the compound/substance with its related function

• A. Adenosine - Component of cell membrane
• B. Cholesterol - Component of cell membrane
• C. Triglyceride - An energy source
• D. Lecithin - Component of nucleic acids

Hint:

Cholesterol maintains membrane stability and fluidity.
Triglycerides = energy storage, Adenosine = nucleoside, Lecithin = phospholipid.
"Cholesterol = Cell membrane component" is a key point for exams.

Answer 1

The Correct Option is B

Cholesterol is a lipid molecule found in animal cell membranes. It stabilizes membrane fluidity by preventing extremes of rigidity or fluidity. Adenosine is a nucleoside, triglycerides are energy storage molecules, and lecithin (phosphatidylcholine) is a membrane phospholipid, not part of nucleic acids. Hence, cholesterol is correctly associated with cell membrane.