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Krebs cycle HTML5


The Krebs cycle is the second step of the cellular respiration which occurs in the mitochondrion. It only yields two ATP and CO2 but generates a great deal of energized electrons.

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Learning goals

  • Understanding how the Krebs cycle leads to the formation of energized electrons that are essential for the respiratory chain to function properly.

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Glycolysis is followed by the Krebs cycle if oxygen is present. Prior to the Krebs cycle is the mitochondrial decarboxylation of pyruvate to acetyl-CoA.
Since two pyruvate have been generated…

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