This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General anatomy, Subject name: Anatomy
Major constitute of nerve cell membrane: 
Select and explain. 
A. Cholesterol, B. Carbohydrates, C. Proteins, D. Lipid
D: Lipid
Answer: D: Lipid 
Explanation: Normally proteins are major component of the cell membrane But in nerve cells lipids are more than proteins