Question

In the electron transport chain of mitochondria, the final electron acceptor is:

• A. NAD
• B. FAD
• C. Oxygen
• D. Cytochrome c

Hint:

Oxygen is essential for aerobic respiration as the final electron acceptor in the electron transport chain.

Answer 1

The Correct Option is C

- The electron transport chain (ETC) in mitochondria transfers electrons through a series of complexes. 
- The final electron acceptor at the end of the ETC is oxygen (O\(_2\)), which combines with electrons and protons to form water, so (C) is correct. 
- NAD and FAD are electron carriers that deliver electrons to the ETC, but are not the final acceptors, so (A) and (B) are incorrect. 
- Cytochrome c is an intermediate electron carrier, not the final acceptor, so (D) is incorrect. 
Answer: \(\boxed{\text{C}}\)