Multiple Choice
In oxidative phosphorylation, ATP synthase plays a direct role in which process?
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Review 4: Amino Acid Oxidation, Oxidative Phosphorylation, & Photophosphorylation
Oxidative Phosphorylation 4
Multiple Choice
In oxidative phosphorylation, what is the primary function of ATP synthase?
A
It directly synthesizes NADH by reducing .
B
It pumps protons from the intermembrane space into the mitochondrial matrix to build the proton gradient.
C
It transfers electrons from NADH to to form water.
D
It uses the proton-motive force to catalyze .
Verified step by step guidance1
Understand the role of ATP synthase in oxidative phosphorylation, which is part of cellular respiration occurring in the mitochondria.
Recall that the electron transport chain creates a proton gradient by pumping protons (H\(\textsuperscript{+}\)) from the mitochondrial matrix into the intermembrane space, establishing a proton-motive force.
Recognize that ATP synthase is an enzyme complex embedded in the inner mitochondrial membrane that allows protons to flow back into the matrix down their electrochemical gradient.
Know that the energy released by this proton flow through ATP synthase drives the phosphorylation of ADP and inorganic phosphate (P\(\textsubscript{i}\)) to form ATP.
Conclude that the primary function of ATP synthase is to use the proton-motive force to catalyze the reaction: \(\text{ADP} + \text{P}_{i} \rightarrow \text{ATP}\), rather than synthesizing NADH, pumping protons, or transferring electrons.
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