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Question

Krebs' cycle takes place in

A
Cytoplasm
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B
Chloroplast
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C
Nucleus
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D
Mitochondria
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Solution

The correct option is D Mitochondria
Kreb's cycle takes place in the mitochondrial matrix. The pyruvate formed by the reduction of glucose in the glycolysis is broken into acetyl-CoA which enters the Kreb's cycle and condenses with oxaloacetate to form citrate. One pyruvate molecules produce 15 ATP and two pyruvate molecules lead to the production of 30 ATP.
So, the correct answer is option D.

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