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Vitamins and Coenzymes

Vitamins and Coenzymes
The vitamin niacin is part of the __________ molecule.

pyrophosphate
ferredoxin
pyridoxal phosphate
NAD+

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Vitamins and Coenzymes
Biotin occurs mainly in combined forms bound to protein through

ε-N-lipoyl - L-lysine
ε-N-biotinyl-L-lysine
ε-S-lysine moiety
ε-N-lysine moiety

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Vitamins and Coenzymes
Main function of insulin hormone is to

decrease glycogen in liver
increase glycogen in liver
increase blood sugar
decrease blood sugar

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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
A fat-soluble vitamin that regulates blood clotting is

vitamin K
vitamin C
vitamin A
niacin

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Vitamins and Coenzymes
Ascorbic acid acts as an

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

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