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Role of Micronutrients

Oxidation of ...

Question

Oxidation of succinic acid to fumaric acid is accompanied by reduction of

A

FAD

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B

NAD

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C

FMN

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D

NADP

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Solution

The correct option is A FAD
Succinate dehydrogenase enzyme catalyzes the oxidation of succinic acid by removal of its two hydrogen atoms and forms fumaric acid. The removed hydrogen atoms reduce the FAD into $F A D H_{2}$ that enters mitochondrial electron transport chain. Thus, the correct answer is option A.

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Similar questions

Q. Pick the reaction from the following where the reduction of FAD

^{+}

occurs in the reactions of respiration.
(I) Succinic acid

\to

Fumaric
(II) Malic acid

\to

Oxaloacetic acid
(III) 2 phosphoglycerate

\to

Phosphoenol pyruvic acid
(IV) Pyruvic acid

\to

Q. In TCA during the conversion of succinic acid to fumaric acid how many ATP are produced?

Q. Pick up the reactions from the following where a water molecule is removed and reduction of

N A D^{+}

does not occur in the reactions of respiration.
i) Succinic acid to fumaric acid
ii) Malic acid to oxaloacetic acid
iii) 2-Phosphoglycerate to phosphoenol pyruvic acid
iv) Pyruvic acid to acetyl CoA

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.

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