This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Biochemistry
Cell membrane consists of: 
Select and explain. 
A. Lipids and proteins, B. Lipids only, C. Protein only, D. None of the above
A: Lipids and proteins
Answer: A: Lipids and proteins 
Explanation: None