The number of substrate level phosphorylation | vedclass

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(D) In the citric acid cycle (Krebs cycle),substrate-level phosphorylation occurs during the conversion of succinyl-CoA to succinate.This step is cata

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$2$

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(D) In the citric acid cycle (Krebs cycle),substrate-level phosphorylation occurs during the conversion of succinyl-CoA to succinate.This step is catalyzed by the enzyme succinyl-CoA synthetase,which produces one molecule of $GTP$ (or $ATP$) per turn of the cycle.Since one molecule of glucose produces two molecules of acetyl-CoA through glycolysis and the link reaction,the citric acid cycle runs twice for each glucose molecule.Therefore,the total number of substrate-level phosphorylations for one molecule of glucose in the citric acid cycle is $1 	imes 2 = 2$.

The number of substrate level phosphorylations $(SLP)$ for one molecule of glucose in the citric acid cycle is:

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