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Vitamins and Coenzymes

Vitamins and Coenzymes
Which of the following are reduced coenzymes?

NADH and FADH2
NAD+ and FAD
Coenzyme A and ubiquinone
ATP and GTP

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Vitamins and Coenzymes
Vitamin B12 (Cobalamin) is only synthesized by

micro-organisms
fishes
plants
animals

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Vitamins and Coenzymes
Vitamin-C is considered as a

water soluble
fat and water soluble
fat soluble
none of these

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Vitamins and Coenzymes
What compound of raw egg white causes a syndrome similar to vitamin B deficiency?

Ovalbumin
Avidin
Betabindin
Albumin

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Vitamins and Coenzymes
Dihydroorotate dehydrogenase contains

4 flavins and 4 atoms of iron per molecule
2 flavins and 2 atoms of iron per molecule
4 flavins and 2 atoms of iron per molecule
2 flavins and 4 atoms of iron per molecule

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Vitamins and Coenzymes
The reductant, NADH, transfers the electrons via a flavo-proteins to the specific disulfide (S-S) protein to form a dithiol (SH,SH) protein which converts vitamin

B12(Co) to B12(Co2+)
B12(Co2+)to B12(Co)
B12(Co+)to B12(Co2+)
B12(Co2+)to B12(Co+)

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