Question

How many atp molecules are formed through oxidative phosphorylation of one molecule of alpha -ketoglutaric acid entering the krebs cycle?

Answer 1

Answer -

• When one molecule of pyruvic acid is used as respiratory substrate in Kreb's cycle, 15 ATP molecules are produced. In Kreb's cycle, 1 molecule of FADH2 and 4 molecules of NADH are produced. One molecule of FADH2 produces 2 ATP molecules in ETS. Four molecules of NADH produces 4 x 3 = 12 molecules of ATP. Also, 1 molecule of ATP is produced by substrate level phosphorylation. Hence, total number of ATP molecules produced by 1 molecule of pyruvic acid during Krebs cycle = 12+2+1 = 15.

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Answer 2

Answer:

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