1.Succinate dehydrogenase . . . . . . . . A. reduces FAD to FADH2 B. is part of

ID: 534793 • Letter: 1

Question

1.Succinate dehydrogenase . . . . . . . .

A. reduces FAD to FADH2

B. is part of the electron transport chain

C. is a membrane-bound enzyme

D. B and C above

E. A, B, and C above

2. Pyruvate dehydrogenase and -ketoglutarate dehydrogenase . . .

A. reduce NAD+ to NADH

B. contain an E3 component

C. activate acyl groups via attachment to coenzyme A

D. A, B, and C above

E. None of the above

3. The pentose phosphate pathway (also phosphogluconate pathway) . . .

A. produces citrate

B. produces NADPH

C. produces precursors for nucleotide synthesis

D. A and B above

E. B and C above

4. NADH . . .

A. donates electrons to Complex I

B. accepts electrons from Complex II

C. is the oxidized form of the cofactor

D. A and C above

E. B and C above

Ans1. E. A,B and C above

Succinate dehydrogenase is the only enzyme that takes part in the citric acid cycle and electron transport chain both.

The reaction involving this enzyme ,where FAD accepts two electrons to make FADH2 .

The enzyme is found in the inner mitochondrial membrane of the eukaryotea and hence called as membrane bound enzyme.

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