Which one of the following is Complex V of the ETS on the inner membrane of mitochondria?
Correct answer: D. ATP synthase
- A. NADH dehydrogenase
- B. Cytochrome oxidase
- C. Ubiquinase
- D. ATP synthase
Explanation
ATP synthase, or Complex V, is the enzyme that synthesizes ATP by utilizing the proton gradient created by the other complexes in the electron transport chain. This process, known as oxidative phosphorylation, occurs on the inner mitochondrial membrane. In contrast, NADH dehydrogenase (Complex I) and cytochrome oxidase (Complex IV) are involved in electron transfer processes, and 'ubiquinase' does not exist as an enzyme in this context.
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About Bioenergetics
Cellular respiration explains how cells release energy from glucose through glycolysis, the link reaction, Krebs cycle and electron transport chain. It includes ATP production, substrate-level and oxidative phosphorylation, aerobic versus anaerobic respiration, and the roles of mitochondria, oxygen and fermentation in energy transfer.
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