This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: membrane structure and function, Subject name: Biochemistry
[{'content': 'In cell membrane, following are true except \nSelect and explain. \nA. Lipids are regularly arranged, B. Lipids are symmetrical, C. Protein displaced laterally, D. None', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Membranes are mainly made up of lipids, proteins and small amount of carbohydrates. The contents of these compounds vary according to the nature of the membrane. The carbohydrates are present as glycoproteins and glycolipids. Phospholipids are the most common lipids present and they are amphipathic in nature. Cell membranes also contain cholesterol.Ref: DM Vasudevan, page no: 11', 'role': 'assistant'}]