Question 12 • PA Human Anatomy & Physiology A 2026-2027 WHITE IC
Cellular respiration proceeds in this order: glycolysis, the Krebs cycle, and then the electron transport chain. Glycolysis breaks glucose into smaller molecules, which are further processed in the Krebs cycle; the electron transport chain uses high-energy electrons from earlier steps to produce most of the ATP. So the correct choice is C, glycolysis → Krebs cycle → electron transport chain.
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