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Vitamins and Coenzymes

Vitamins and Coenzymes
A deficiency of thiamin produces the disease known as

cataract
anemia
beri-beri
scurvy

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Vitamins and Coenzymes
Vitamin-C is considered as a

none of these
fat and water soluble
water soluble
fat soluble

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

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Vitamins and Coenzymes
Vitamins are essential because the organism

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

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Vitamins and Coenzymes
Vitamin K1 was first isolated from alfalalfa and has the phytyl side chain consisting of

four isoprene units
four isoprene units
nine isoprene units
six isoprene units

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Vitamins and Coenzymes
An enzyme, L-folate reductase reduces folic acid to

hydrofolic acid
trihydrofolic acid
tetrahydrofolic acid
dihydrofolic acid

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MORE MCQ ON Vitamins and Coenzymes

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