Question Detail

BIO 101 BIO 101 Past Questions Objective Question

Question

During what stage of cellular respiration is the most ATP synthesized?
Options
A glycolysis
B Kreb's cycle
C Chemiosmosis
Correct Answer
D oxidation of pyruvate
Correct Answer

Option C is the correct answer.

Detailed Explanation

The vast majority of ATP produced during aerobic respiration is generated during chemiosmosis, which is part of the electron transport chain. This process uses the energy from electrons carried by NADH and FADH2 to create a proton gradient that drives ATP synthase. Glycolysis and the Krebs cycle produce a small amount of ATP via substrate-level phosphorylation.

Hint

Which process uses the energy from the electron transport chain to power ATP synthase?

Question Info