How many molecules of ATP are obtained by the respiration of one molecule of glucose ........

General Studies (CGL) General Science

How many molecules of ATP are obtained by the respiration of one molecule of glucose?

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SSC CGL 9th March 2020 Shift-2

- The process of complete aerobic respiration of one glucose molecule generally yields about 36 to 38 molecules of ATP in eukaryotic cells.

- Option 1 (36): This is widely accepted as the ATP yield in most eukaryotic cells considering the cost of transporting NADH into mitochondria.

- Option 2 (4): Only glycolysis produces 4 ATP (net gain of 2), not the whole respiration process.

- Option 3 (38): Sometimes considered correct for prokaryotes or when all NADH enter mitochondria efficiently.

- Option 4 (2): Refers to net ATP from glycolysis only, not total respiration.

Correct Answer: Option:1, 36

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