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': 'FADH2 enters at which complex in ETC ? \nSelect and explain. \nA. I, B. II, C. III, D. IV', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., II FADH, enters at complex II, therefore, generates only 1-5 molecules of ATP (1 ATP production is bypassed at complex I).", 'role': 'assistant'}]