The Citric Acid Cycl5

The Citric Acid Cycl5 - The Citric Acid Cycle Before the...

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The Citric Acid Cycle Before the Citric Acid Cycle After emerging from glycolysis, the two pyruvate are transported into the mitochondria. There, the pyruvate undergo a transition stage before entering the actual citric acid cycle. In this phase the pyruvate is transformed into acetyl-coenzyme A (acetyl-CoA), the starting product in the citric acid cycle. ; 2 Pyruvate + 2 coenzyme A + 2NAD + -> 2 acetyl-CoA +2CO 2 + 2 NADH Note : Students taking the AP biology exam do not need to know more about this transition process. Click here to skip to the next section. Formation of Acetyl-CoA Acetyl-CoA is a common product of carbohydrate, lipid, and protein breakdown. It consists of an acetyl group attached to a coenzyme A molecule. Coenzyme A is a large molecule that contains a molecule of ADP with two side chain groups stemming from its phosphate arms. Acetyl groups attach to the end of these side chains. In this way, the coenzyme A acts as a carrier of acetyl groups. When it is broken down by water, large amounts of energy are released, which, as we
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The Citric Acid Cycl5 - The Citric Acid Cycle Before the...

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