Choose the statement that correctly identifies the process and location that produces most ATP from ADP during cellular respiration.

Most ATP in cellular respiration is produced by oxidative phosphorylation, which includes the electron transport chain in the mitochondria. The chain creates a proton gradient that drives ATP synthase to convert ADP into ATP. Glycolysis and the Krebs cycle make some ATP, but much less; the Calvin cycle is part of photosynthesis.

AI-written and checked against the verified answer.