What is the number of ATP obtained through Krebs cycle?

2 ATP

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4 ATP

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36 ATP

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None of the above

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Solution

The correct option is A 2 ATP
Glycolysis results in the formation of 2 ATP. Total 4 ATP are formed but 2 ATP are used. So, the yield after glycolysis is of 2 ATP. The Krebs cycle produces 2 ATP. There are molecules of NADH $_{2}$ and FADH $_{2}$ formed which will enter the electron transport chain.
So, the correct answer is option A.

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