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  4. Which one of the following reactions is an example of oxidative decarboxylation?

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Q. Which one of the following reactions is an example of oxidative decarboxylation?

KCETKCET 2011Respiration in Plants

Solution:

Oxidative decarboxylation is the link reaction or gateway step as it links glycolysis with Krebs’ cycle. Pyruvate which is formed in cytoplasm by glycolysis produce $CO_2, NADH_2$ and acetyl CoA by oxidative decarboxylation reaction. Acetyl CoA functions as substrate entrant for Krebs’ cycle.