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': 'In TCA cycle, CO2 is released from: \nSelect and explain. \nA. Thiokinase, B. Isocitrate dehydrogenase, C. Citrate dehydrogenase, D. Alpha ketoglutrate', 'role': 'user'}, {'content': 'Answer: B \nExplanation: B i.e. Isocitrate dehydrogenase 2 molecules of carbon dioxide are released in TCA cycle. One before and one after a - ketoglatarate. Enzymes used are - isocitrate dehydrogenase and a ketoglutarate dehydrogenaseQ respectively.', 'role': 'assistant'}]