Q. Which pathway produces the most ATP per glucose molecule under aerobic conditions?
✅ Correct Answer: (C)
Oxidative phosphorylation (electron transport chain + chemiosmosis)
Explanation: Oxidative phosphorylation (electron transport chain and chemiosmosis in mitochondria) yields the most ATP from glucose during aerobic respiration. Glycolysis yields a small amount, fermentation regenerates NAD+ but produces little ATP, and the pentose phosphate pathway mainly generates NADPH and ribose-5-phosphate rather than large ATP amounts.
Explanation by: Mr. Dubey
Oxidative phosphorylation (electron transport chain and chemiosmosis in mitochondria) yields the most ATP from glucose during aerobic respiration. Glycolysis yields a small amount, fermentation regenerates NAD+ but produces little ATP, and the pentose phosphate pathway mainly generates NADPH and ribose-5-phosphate rather than large ATP amounts.