The number of substrate level phosphorylations in one turn of citric acid cycle is :

Three

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Zero

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One

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Two

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Solution

The correct option is C One
During Krebs' or citric acid cycle, succinyl-CoA is acted upon by enzyme succinyl-CoA synthetase thiokinase to form succinate (a 4C compound). The reaction releases sufficient energy to form ATP (in plants) or GTP (in animals) by substrate-level phosphorylation. GTP can then be used to form ATP.

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Do you know any step in the TCA cycle where there is substrate level phosphorylation. Which one?

The number of substrate-level phosphorylation in one turn of the citric acid cycle is

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