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Vitamins and Coenzymes

Vitamins and Coenzymes
The symptoms of retinol excess are

all of these
weakness
bone fragility
nausea

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Vitamins and Coenzymes
A deficiency of Vitamin K results in a decreased level of

fibrinogen
prothrombin
thrombin
fibrin

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Vitamins and Coenzymes
Ascorbic acid acts as an

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

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Vitamins and Coenzymes
Which of these is a vitamin A precursor?

Pyridoxine
Thiamine
Cobalamin
Beta-Carotene

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Vitamins and Coenzymes
Which of these is a symptom of vitamin A deficiency?

Blindness
Impaired blood clotting
Impaired taste perception
Osteoporosis

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

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

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