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
[{'content': 'Which of the following lipids is associated with respiratory distress syndrome? \nSelect and explain. \nA. Phosphatidylethanolamine (cephalin), B. Phosphatidylserine, C. Dipalmitoyl lecithin, D. Phosphatidylinositol', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Dipalmitoyl lecithin is a very effective surface-active agent and a major constituent of the surfactant preventing adherence, due to surface tension, of the inner surfaces of the lungs. Its absence from the lungs of\xa0premature\xa0infants\xa0causes\xa0respiratory distress syndrome.\nHARPERS ILLUSTRATED BIOCHEMISTRY30th ed,\xa0 Page No:216', 'role': 'assistant'}]