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Vitamins and Coenzymes

Vitamins and Coenzymes
The absence of ascorbic acid in the human diet gives rise to

cataract
beri-beri
rickets
pernicious anemia

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Vitamins and Coenzymes
Vitamins are essential because the organism

can synthesize these compounds partially
can't synthesize these compounds at all
None of these
can't synthesize these compounds in the adequate amounts

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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
Which of the following compounds/(s) belong/(s) to the vitamin B6 group?

Pyridoxine
Pyridoxal
All of these
Pyridoxamine

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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
hydroxycobalamin
adenine
5-6 dimethylbenzimidazole

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

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