Which of the following is true concerning oxygen in regards to aerobic respiration?
A. It directly receives electrons and protons from NAD+ and FAD.
B. It is the final electron acceptor in aerobic respiration.
C. It transports electrons to the mitochondrion.
D. It is the only substrate of aerobic respiration.
E. It directly transfers electrons and protons to NAD+ and FAD.
Answer: B
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