CELL RESPIRATION
AEROBIC RESPIRATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Pyruvate is carboxylated; acetyl co-A is formed, reducing NAD+
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Pyruvate is decarboxylated; acetyl co-A is formed, oxidizing NADH
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Pyruvate reacts with co-A, oxidizing NADH
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Pyruvate is decarboxylated; acetyl co-A is formed, reducing NAD+
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Detailed explanation-1: -Answer. The link reaction refers to a stage in cellular respiration that “links” two other stages. The link reaction takes the products of the first stage, glycolysis, and converts them into reactants that will enter the Krebs cycle. The primary product of glycolysis is the 3-carbon compound pyruvate.
Detailed explanation-2: -Thus, oxidative decarboxylation is a reaction that changes pyruvate to acetyl CoA.
Detailed explanation-3: -The Link Reaction Reduced NAD will be used in oxidative phosphorylation while the acetyl CoA will be used in the next stage of aerobic respiration, the Krebs cycle. During the link reaction, a carbon atom is removed from pyruvate, forming carbon dioxide. This converts pyruvate into a two-carbon molecule called acetate.
Detailed explanation-4: -In the conversion of pyruvate to acetyl CoA, each pyruvate molecule loses one carbon atom with the release of carbon dioxide. During the breakdown of pyruvate, electrons are transferred to NAD+ to produce NADH, which will be used by the cell to produce ATP.