Multiple Choice
In aerobic metabolism, which energy pathway produces the greatest amount of ATP per molecule of glucose?
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Review 4: Amino Acid Oxidation, Oxidative Phosphorylation, & Photophosphorylation
Oxidative Phosphorylation 1
Multiple Choice
In aerobic cellular respiration, which stage produces the greatest amount of ATP directly or via the electron transport chain?
A
Glycolysis
B
Citric acid cycle (Krebs cycle)
C
Pyruvate oxidation (conversion of pyruvate to acetyl-CoA)
D
Oxidative phosphorylation (electron transport chain and chemiosmosis)
Verified step by step guidance1
Identify the main stages of aerobic cellular respiration: Glycolysis, Pyruvate oxidation, Citric acid cycle (Krebs cycle), and Oxidative phosphorylation (electron transport chain and chemiosmosis).
Understand that ATP can be produced directly in some stages (substrate-level phosphorylation) and indirectly in others (oxidative phosphorylation).
Recall that Glycolysis and the Citric acid cycle produce a small amount of ATP directly through substrate-level phosphorylation.
Recognize that Pyruvate oxidation does not produce ATP directly but generates electron carriers (NADH) that feed into the electron transport chain.
Know that the electron transport chain and chemiosmosis (Oxidative phosphorylation) generate the majority of ATP by using the energy from electrons carried by NADH and FADH2 to drive ATP synthase.
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