The greatest number of ATP are generated during the

Conversion of pyruvic acid to acetyl Co-A.

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Electron transport chain.

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Glycolysis.

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Krebs cycle.

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Solution

The correct option is B Electron transport chain.
Glycolysis - 2 net ATP
Citric Acid Cycle - 2 ATP, ETC - 34 ATP; for a total of 38 ATP .
Electron transport chain takes place in the mitochondrial membranes. During this step, the hydrogen ions (or a pair of electrons) are transported from one carrier to another and they are finally used to reduce oxygen to water. During this transfer of electrons, lot of energy is released which is in the form of ATP. ATP is thus an energy rich molecule and can be called as the energy currency of the cell.
Therefore, the correct answer is option B.

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