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C3 Cycle

In Krebs cycl...

Question

In Krebs cycle, 5-carbon compound formed is

A

α

-ketoglutaric acid

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B

fumaric acid

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C

citric acid

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D

malic acid

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Solution

The correct option is A $α$ -ketoglutaric acid
Isocitrate dehydrogenase or IDH is an enzyme that participates in the citric acid cycle. It catalyzes the third step of the cycle: the oxidative decarboxylation of isocitrate, producing alpha-ketoglutarate (α-ketoglutarate) a 5- carbon compound and CO2 while converting NAD+ to NADH.
So, the correct option is, 'α-ketoglutaric acid'.

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Similar questions

Q. What is the intermediate product between

α

-ketoglutaric acid and succinic acid in Krebs cycle?

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

α

-ketoglutaric acid entering Krebs cycle?

Q. Match List I(compound oxidized during Krebs cycle) with List II(Compound formed on oxidation) and select the correct answer.

List-I	List-II
a. Pyruvic acid	$1$ . AcetylCoA
b. Isocitric acid	$2$ . Succinyl CoA
c. a-Ketoglutaric acid	$3$ . Oxaloacetic acid
d. Succinic acid	$4$ . Oxalosuccinic acid
	$5$ . Fumaric acid

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.

The intermediate product between

α

-ketoglutaric acid and succinic acid in TCA cycle is

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