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  4. Substrate level phosphorylation occurs during which step of Krebs' cycle?

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Q. Substrate level phosphorylation occurs during which step of Krebs' cycle?

Respiration in Plants

Solution:

During Krebs' or citric acid cycle, succinyl-$CoA$ is acted upon by enzyme succinyl-CoA synthetase 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 form $ATP$ through a coupled reaction.

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