This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Cell Membrane and transpo protiens, Subject name: Physiology
[{'content': 'At low concentrations, phospholipids form:- \nSelect and explain. \nA. Chylomicrons, B. Micelles, C. Monolayer, D. Bilayer', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Phospholipids Low concentrations form monolayer Eg: Surfactant Moderate concentrations phospholipids forms circular aggregates Eg: Micelles High concentrations forms bilayer Eg: Cell membranes (made of lipid bilayers)', 'role': 'assistant'}]