Question

What is the role of $NA{D}^{+}$ in cellular respiration?

• A. It is a nucleotide source for ATP synthesis.
• B. It functions as an enzyme.
• C. It is the final electron acceptor for anaerobic respiration.
• D. It functions as an electron carrier.

Answer 1

Answer: (D)

It functions as an electron carrier.

NAD is the electron carrier that picks the electron from other molecules and gets reduced to form NADH. It is thus used as a reducing agent to donate electrons. Thus, the correct answer is option D.