Multiple Choice
In oxidative phosphorylation, what directly provides the energy that powers ATP synthase to produce ATP?
8
views
Review 4: Amino Acid Oxidation, Oxidative Phosphorylation, & Photophosphorylation
Oxidative Phosphorylation 1
Multiple Choice
In aerobic cellular respiration, which process produces the largest amount of ATP per glucose molecule?
A
Substrate-level phosphorylation during glycolysis
B
Oxidative phosphorylation (electron transport chain coupled to chemiosmosis)
C
Substrate-level phosphorylation in the citric acid (TCA) cycle
D
Fermentation (lactate or ethanol production)
Verified step by step guidance1
Identify the main stages of aerobic cellular respiration: glycolysis, the citric acid (TCA) cycle, and oxidative phosphorylation (electron transport chain coupled to chemiosmosis).
Understand that substrate-level phosphorylation occurs during glycolysis and the TCA cycle, producing a small, direct amount of ATP by transferring a phosphate group to ADP.
Recognize that oxidative phosphorylation involves the electron transport chain creating a proton gradient across the mitochondrial membrane, which drives ATP synthesis via ATP synthase.
Recall that oxidative phosphorylation produces the majority of ATP because it harnesses energy from NADH and FADH2 generated in earlier steps to produce ATP efficiently.
Conclude that among the options, oxidative phosphorylation yields the largest amount of ATP per glucose molecule due to its coupling of electron transport and chemiosmosis.
Related Videos
Related Practice
