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Vitamins and Coenzymes

Vitamins and Coenzymes
Ascorbic acid acts as an

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

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Vitamins and Coenzymes
β-carotene together with α-carotene, γ-carotene and cryptoxanthine are synthesized by

animal
plants and animals both
none of these
plants

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Vitamins and Coenzymes
Which of these molecules is vitamin H?

Carnitine
None of these
Biotin
Folic acid

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Vitamins and Coenzymes
Which of these hormones is a catecholamine?

Tetrahydrofolate
Tetraiodothyronine
Norepinephrine
Follitropin

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

dihydrofolic acid
tetrahydrofolic acid
hydrofolic acid
trihydrofolic acid

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Vitamins and Coenzymes
The prosthetic group biotin is a carrier of which type of molecule?

Ammonia
Sulfhydryl group
Methyl group
Activated carbon dioxide (CO2)

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