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Vitamins and Coenzymes

Vitamins and Coenzymes
Ascorbic acid acts as an

oxidizing and reducing agent both
oxidizing agent
None of these
reducing agent

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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
In the co-enzyme B12the position occupied by a cyanide ion in vitamin B12 is bonded directly to the __________ of the ribose of adenosine.

cyanocobalamin
5-6 dimethylbenzimidazole
adenine
hydroxycobalamin

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Vitamins and Coenzymes
Which of the following are reduced coenzymes?

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

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

Avidin
Albumin
Ovalbumin
Betabindin

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Vitamins and Coenzymes
Models of end-linked Osaka VI Fibrinogen dimers, a bilayer dimer is linked at

either end via two disulfide bonds
either end via a single disulfide bond
both ends by two disulfide bonds
both ends by one disulfide bond

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