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': "ATP'S are formed in the following steps of kreb's cycle: \nSelect and explain. \nA. Isocitrate dehydrogenase, B. Succinate dehydrogenase, C. Succinate thiokinase and Malate dehydrogenase both, D. All of the above", 'role': 'user'}, {'content': "Answer: D \nExplanation: A i.e. Isocitrate dehydrogenase; B i.e. Succinate dehydrogenase; C i.e. Succinate thiokinase;- Energy producing enzymes in Kreb's (TCA) cycle are - a -ketoglutarate dehydrogenase, Malate dehydrogenase, Isocitrate dehydrogenase, Succinate dehydrogenase and Succinate thiokinase.Mn - A KG MIS (- dehydrogenase) is ST (successful teacher)- One NADH may produce 2.5 ATP and 1 FADH may produce 1.5 ATP through respiratory chainQ.", 'role': 'assistant'}]