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Vitamins and Coenzymes

Vitamins and Coenzymes
Which of these hormones is a catecholamine?

Tetraiodothyronine
Norepinephrine
Follitropin
Tetrahydrofolate

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Vitamins and Coenzymes
An early sign of retinol deficiencies in man is

none of these
xeropthalmia
keratinization
night blindness

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Vitamins and Coenzymes
E.coli ACP has its molecular weight as around

39000
90,000
19000
9000

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

oxidizing agent
antioxidants
all of these
reducing agent

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Vitamins and Coenzymes
The occurrence of metals such as iron or molybdenum in some flavoproteins can

all of these
stabilize the semiquinone
form chelation
de-stabilize the semiquinone

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

plants
animals
micro-organisms
fishes

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