Link enzyme in cellular respiration which catalyzes the substrate produced during glycolysis, and funnels it into the Kreb's cycle is ______.

Citrate synthetase

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Pyruvate dehydrogenase

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Isocitrate dehydrogenase

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Succinyl thiokinase

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Solution

The correct option is B Pyruvate dehydrogenase
Pyruvic acid synthesized in glycolysis must enter inside the mitochondria, where oxidative decarboxylation occurs in the presence of NAD⁺ and coenzyme-A. This results in the formation of acetyl CoA which can enter the Kreb's cycle. This reaction is catalyzed by pyruvate dehydrogenase.

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Which of the following molecules is NOT formed as a result of the Krebs cycle during aerobic cellular respiration?

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