Acceptor of acetyl Co-A in the Krebs cycle is

Malic acid.

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Fumaric acid.

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α

- ketoglutaric acid.

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Oxaloacetic acid.

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Solution

The correct option is D Oxaloacetic acid.
During the process of respiration, pyruvic acid is produced in the process of glycolysis. The three carbon atom containing pyruvic acid is oxidatively decarboxylated to two carbon atom containing compound acetyl CoA by the action of enzyme pyruvate dehydrogenase. The acetyl CoA then enters the Krebs cycle. The first reaction of Krebs cycle catalyzed by enzyme citrate synthase. During this one unit of acetyl CoA is fused with one unit of oxaloacetic acid to generate one molecule of citric acid.

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Q. What is the intermediate product between

α

-ketoglutaric acid and succinic acid in Krebs cycle?

Q. In which of the following steps of citric acid cycle,

C O_{2}

is evolved?

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Select the correct answer using the codes given below

Q. How many ATPs are formed through oxidative phosphprylation for one molecule of

α

-ketoglutaric acid entering Krebs cycle?

Match the following columns
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Q. Consider

A. alpha ketoglutaric acid

B. Succinic acid

C. Citric acid

D. Fumaric acid

E. Oxalosuccinic acid

Choose the correct order of their formation in the Krebs cycle.

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