This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Respiratory chain, Subject name: Biochemistry
Mitochondrial membrance protein contain transpoer of 
Select and explain. 
A. NADH, B. Acetyl COA, C. NADPH, D. ATP
A: NADH
Answer: A: NADH 
Explanation: The electron transpo chain in the mitochondrial membrane has been separated in 4 (four) complexes or components as follows: Complex I: NADH-CoQ reductaseComplex II: Succinate-CoQ reductase Complex III: CoQ-cytochrome C reductase Complex IV: Cytochrome C oxidaseRef: MN Chatterjea Textbook of Medical Biochemistry, 8th Edition, Page no: 139