Question

Which compounds donate electrons to the electron transport chain?

1) NaD⁺H
2) FADH₂
3) Both NaD⁺H and FADH₂
4) None of the above

Answer 1

NADH and FADH₂ are the compounds that donate electrons to the electron transport chain in cellular respiration.

Step-by-step explanation:

The compounds that donate electrons to the electron transport chain are NADH and FADH₂. NADH donates its electrons at Complex I, while FADH₂ donates its electrons at Complex II. These electrons are then passed along the electron transport chain, through various protein complexes and mobile carriers, ultimately resulting in the production of ATP.