In mitochondria, exergonic redox reactions
A) are the source of energy driving prokaryotic ATP synthesis.
B) are directly coupled to substrate-level phosphorylation.
C) provide the energy that establishes the proton gradient.
D) reduce carbon atoms to carbon dioxide.
E) are coupled via phosphorylated intermediates to endergonic processes.

Question

Quizplus · Accepted Answer

Exergonic redox reactions in mitochondria provide the energy that establishes the proton gradient, which in turn drives oxidative phosphorylation and ATP synthesis.

Answer choices A, B, D, and E are incorrect because exergonic redox reactions in mitochondria do not directly drive prokaryotic ATP synthesis, are not directly coupled to substrate-level phosphorylation, do not reduce carbon atoms to carbon dioxide, and are not coupled via phosphorylated intermediates to endergonic processes.

In Mitochondria, Exergonic Redox Reactions