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Vitamins and Coenzymes

Vitamins and Coenzymes
Vitamin B12 (Cobalamin) is only synthesized by

animals
fishes
plants
micro-organisms

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

pyrophosphate
NAD+
pyridoxal phosphate
ferredoxin

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Vitamins and Coenzymes
Selenium is an essential component of the enzyme glutathione peroxidase which

scavenges toxic hydoperoxycompounds in tissues
None of these
oxidizes toxic hydoperoxycompounds in tissues
reduces toxic hydoperoxycompounds in tissues

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Vitamins and Coenzymes
Vitamin B12 is useful in the prevention and treatment of

beri-beri
pernicious anemia
cataract
scurvy

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Vitamins and Coenzymes
The most prominent role that tocopherol has in in-vitro systems is as a strong

all of these
oxidizing agent
antioxidants
reducing agent

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Vitamins and Coenzymes
Which of these hormones is a catecholamine?

Tetrahydrofolate
Norepinephrine
Tetraiodothyronine
Follitropin

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