Which one of the following molecules of the respiratory chain is found at the lowest energy level?
Correct answer: D. Oxygen
- A. Cytochrome a
- B. Cytochrome b
- C. Cytochrome a3
- D. Oxygen
Explanation
Cytochrome a3 , part of cytochrome c oxidase (Complex IV), is the final electron acceptor in the electron transport chain, and it functions at the lowest energy level before transferring electrons to oxygen.
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