CELL RESPIRATION
THE KREBS CYCLE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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A CO2 portion is removed per molecule of pyruvate.
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NAD+ is reduced
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Coenzyme A is attached to the remaining acetic acid portion (acetyl group).
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Oxygen is oxidized
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Detailed explanation-1: -Overview of pyruvate oxidation Pyruvate-three carbons-is converted to acetyl CoA, a two-carbon molecule attached to coenzyme A. A molecule of coenzyme A is a necessary reactant for this reaction, which releases a molecule of carbon dioxide and reduces a NAD+ to NADH.
Detailed explanation-2: -Even though pyruvate oxidation does not produce ATP in what way does it assist the process of producing ATP besides transforming pyruvate into acetyl-coA?
Detailed explanation-3: -Pyruvate oxidation is an anaerobic process as it does not require oxygen for the entire glycolysis reaction. At the end of this process, it is converted to CO2 and H2O. In fermentation it is converted into lactic acid or ethanol which is incomplete oxidation. Therefore, pyruvate oxidation is an anaerobic process.