Question

Which of the following is a choline-containing lipid?

• A. \( \text{Phosphatidylserine} \)
• B. \( \text{Phosphatidylglycerol} \)
• C. \( \text{Phosphatidylethanolamine} \)
• D. \( \text{Sphingomyelin} \)

Hint:

Sphingomyelin contributes to membrane stability and is essential for nerve function.

Answer 1

The Correct Option is D

Sphingomyelin is a choline-containing lipid, classified as a sphingophospholipid. Unlike phosphatidylserine and phosphatidylethanolamine, which contain different head groups, sphingomyelin contains phosphocholine. It is a major component of myelin sheaths, crucial for neuronal insulation and signal transmission.