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Question

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

A
Citrate synthetase
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B
Pyruvate dehydrogenase
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C
Isocitrate dehydrogenase
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D
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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