This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: ETC, Subject name: Biochemistry
Mitochondrial membrane contains a protein which is transpoer of: 
Select and explain. 
A. Oxaloacetate, B. Acetyl CoA, C. NADH, D. ATP
D: ATP
Answer: D: ATP 
Explanation: Mitochondrial membrane has ADP - ATP translocase, which transpos ADP in & ATP out of mitochondria. ADP - ATP translocase helps in the transfer of molecules across the IMM. They have Flip Flop Mechanism. Atractyloside inhibits ADP-ATP Translocase