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After glycolysis occurs, the products may enter the Krebs cycle. Which major products result from these reactions?

NAD+ and FAD

ATP and NADH

ATP, FADH2, and NADH

pyruvic acid and ATP

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The third option from top is the answer. The major products that result from the Krebs cycle are NADH,  FADH and ATP in that order.

The Krebs cycle is the central metabolic pathway in all aerobic organisms. The cycle is a series of eight reactions that occur in the mitochondrion. These reactions take a two carbon molecule called acetate and completely oxidize it to carbon dioxide.

The Krebs cycle serves two main purposes namely:

1.To increase the cell's ATP producing potential by generating  reduced electron carriers such as NADH and reduced ubiquinone.

2. To provide the cell with a variety of metabolic precursors.

By the time the eight reactions in Krebs cycle are over, one ATP, one FADH and four NADH molecules will have been produced

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