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': 'Enzyme  responsible  for  complete  oxidation  of glucose to CO2 and water is present in: \nSelect and explain. \nA. Cytosol, B. Mitochondria, C. Lysosomes, D. Endoplasmic reticulum', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Under aerobic conditions, pyruvate is taken up into mitochondria, and after oxidative decarboxylation to acetyl-CoA is oxidized to CO2 by the citric acid cycle.\nUnder anaerobic conditions, pyruvate is reduced by\xa0 the\xa0 NADH\xa0 to\xa0 lactate,\xa0 catalyzed\xa0 by\xa0 lactate dehydrogenase.\n\nHarper 30th edition pg-162', 'role': 'assistant'}]