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Vitamins and Coenzymes

Vitamins and Coenzymes
Which of the following compounds/(s) belong/(s) to the vitamin B6 group?

Pyridoxal
Pyridoxine
All of these
Pyridoxamine

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

xeropthalmia
none of these
night blindness
keratinization

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Vitamins and Coenzymes
Who discovered vitamin C (ascorbic acid)?

Linus Pauling
Albert Szent-Gyorgyi
Kerry Mull is
Paul Berg

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

pyridoxal phosphate
ferredoxin
NAD+
pyrophosphate

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Vitamins and Coenzymes
The symptoms of retinol excess are

nausea
weakness
bone fragility
all of these

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

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

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