In cellular respiration, most ATP are produced directly as a result of
A) fermentation.
B) the electron transport chain.
C) the citric acid cycle.
D) the preparatory stage.
E) the Calvin cycle.

Question

Quizplus · Accepted Answer

Most of the ATP produced comes from the electron transport chain and the ATP synthase complex. Per glucose, 10 NADH and 2 FADH₂ take electrons from glycolysis and the citric acid cycle to the electron transport chain. The maximum number of ATP produced by the chain is therefore 34 ATP, and the maximum number produced by both the chain and substrate-level ATP synthesis is 38.

In Cellular Respiration, Most ATP Are Produced Directly as a Result