This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Respiratory System, Subject name: Physiology
[{'content': 'Surfactant is made up of which of the following: \nSelect and explain. \nA. Degradable products, B. Mucoprotein, C. Fibrinogen, D. Phospholipid', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Ans. D. PhospholipidSurfactant is made up of PHOSPHOLIPID- DI-PALMITOIL-PHOPHATIDYL-CHOUNE (DPPC) + two major proteins having molecular weights of 32,000 and 10,000. It is secreted by TYPE II ALVEOLAR EPITHELIAL CELLS (type II Pneumocyte)', 'role': 'assistant'}]