This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Metabolism of carbohydrate, Subject name: Biochemistry
The mechanism by which pyruvate from cytosol is transpoed to mitochondria is? 
Select and explain. 
A. Chloride antipo, B. Proton sympo, C. ATP dependent antipo, D. Facilitated unipo
B: Proton sympo
Answer: B: Proton sympo 
Explanation: The transpo of pyruvate into the mitochondria is the transpo protein pyruvate translocase. Pyruvate translocase transpos pyruvate in a sympo fashion with a proton, and hence is active, consuming energy.Ref: DM Vasudevan, 7th edition