Question

Which one is complex V of mitochondrial ETS?

• A. NADH dehydrogenase
• B. ATP synthase
• C. Succinate dehydrogenase
• D. Ubiquinone

Answer 1

Answer: (B)

ATP synthase

ETS or electron transport system is an enzymatic series of complexes that are formed by cytochromes and coenzymes. The system works on the proton gradient created by the efflux of protons from mitochondrial matrix. It is the flux back of protons to the mitochondrial matrix through an ion channel ATP synthase that helps in production of ATP. ATP synthase is sometimes called complex V of ETS.

So, the correct answer is 'ATP synthase'.