Which of the following molecules is most directly involved in the transfer of energy from food to the proton pumps depicted in this figure?





a. ATP

b. NADH

c. oxygen

d. ADP


b. NADH
Energy released during glycolysis and the Krebs cycle is captured as NAD+ is reduced to NADH. NADH then donates the energy via electrons to the proton pumps.

Biology & Microbiology

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