Question

In ______________, energy of oxidation is temporarily conserved in the form of the reduced coenzyme NADH....

In ______________, energy of oxidation is temporarily conserved in the form of the reduced coenzyme NADH.

the pentose phosphate pathway

gluconeogenesis

the citric acid cycle

replication
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Answer #1

The citric acid cycle (CAC) is used to release the energy that is stored by the oxidation of acetyl-CoA that are derived from proteins, carbohydrates, and fats into ATP (adenosine triphosphate) and (carbon dioxide).

The steps of the CAC are a series of chemical (redox, hydration, decarboxylation, and dehydration) reactions. Every turn of the cycle produces:

  • One GTP or ATP
  • Three NADH molecules
  • One molecule

In the citric acid cycle, half of the steps are oxidation, in which the energy of oxidation is conserved in the form of reduced coenzyme and NADH molecules very efficiently.

Therefore, "the citric acid cycle" is the correct option.

Hence, the option (c) is the correct answer.

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