Question

which is the final electron acceptor in the electron transport chain of cellular respiration?
○ nadh
○ fadh₂
○ oxygen
○ carbon dioxide

Explanation:

In the electron transport chain of cellular respiration, NADH and FADH₂ are electron donors (they donate electrons to the chain), not acceptors. Carbon dioxide is a product of the citric acid cycle and not involved in accepting electrons at the end of the chain. Oxygen is the final electron acceptor; it accepts electrons and combines with protons to form water.

Answer:

C. oxygen