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': 'The mechanism by which cytosol pyruvate is transported to mitochondria is \nSelect and explain. \nA. Chloride antiport, B. Proton symport, C. ATP dependent antiport, D. Facilitated uniport', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Pyruvate is formed from glucose oxidation (glycolysis) in cytosol.\nIt is transported into the mitochondria along with Er (proton) symport by a monocarboxylate carrier.', 'role': 'assistant'}]