CELL RESPIRATION
THE KREBS CYCLE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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I only
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I and II only
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II and III only
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I, II and III
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Detailed explanation-1: –The second oxidative decarboxylation occurs at the fifth step of the Krebs’ cycle where a molecule of coenzyme-A reacts with the -ketoglutarate to form a 4-carbon compound succinyl-coenzyme A and releasing carbon dioxide and a pair of hydrogen atoms.
Detailed explanation-2: -When the carboxylate functional group is removed by means of oxidation reaction, then the reaction is referred to as oxidative decarboxylation. During respiration in the plants, Oxidative decarboxylation occurs. It is a step involved in Kreb’s cycle.
Detailed explanation-3: -The coenzyme involved in oxidative decarboxylation is phosphate.
Detailed explanation-4: -Answer and Explanation: An example of oxidative decarboxylation reaction is: (C) Conversion of pyruvate to acetyl CoA.