Question

which of the following is not a role played by nadh in cellular respiration?
multiple choice
it powers proton pumps.
it transfers electrons.
it accepts electrons and hydrogen ions.
it oxidizes pyruvate.
it is involved in redox reactions

Explanation:

NADH (Nicotinamide Adenine Dinucleotide) is a coenzyme involved in redox reactions (it transfers electrons). It also accepts electrons and hydrogen ions. In the electron - transport chain, the energy from NADH is used to power proton pumps. However, the oxidation of pyruvate is mainly carried out by pyruvate dehydrogenase complex, not directly by NADH.

Answer:

It oxidizes pyruvate.