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Vitamins and Coenzymes

Vitamins and Coenzymes
Which of these molecules is vitamin H?

Folic acid
Carnitine
None of these
Biotin

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Vitamins and Coenzymes
A deficiency of Vitamin K results in a decreased level of

thrombin
prothrombin
fibrinogen
fibrin

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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.

5-6 dimethylbenzimidazole
adenine
cyanocobalamin
hydroxycobalamin

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Vitamins and Coenzymes
Vitamin-C is considered as a

none of these
water soluble
fat and water soluble
fat soluble

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Vitamins and Coenzymes
The prosthetic group biotin is a carrier of which type of molecule?

Ammonia
Methyl group
Sulfhydryl group
Activated carbon dioxide (CO2)

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Vitamins and Coenzymes
Dihydroorotate dehydrogenase contains

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

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