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  4. In aerobic respiration, total number of ATP molecules formed from 1 glucose molecule is

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Q. In aerobic respiration, total number of ATP molecules formed from 1 glucose molecule is

AIIMSAIIMS 2012Respiration in Plants

Solution:

The net gain from complete oxidation of a glucose molecule in aerobic respiration is 36 ATP molecules. 10 molecules of NADH2 (2 from Glycolysis + 8 from Krebs’ cycle) yield = 10 × 3 = 30 ATP, 2 molecules of FADH2 yield = 2 × 2 = 4 ATP and glycolysis also yields 2 ATP. Therefore, total release of ATP per hexose will be = 30 + 4 + 2 = 36 ATP.