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Vitamins and Coenzymes

Vitamins and Coenzymes
Ascorbic acid acts as an

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

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

pyrophosphate
NAD+
ferredoxin
pyridoxal phosphate

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Vitamins and Coenzymes
Which of the following are reduced coenzymes?

NADH and FADH2
Coenzyme A and ubiquinone
ATP and GTP
NAD+ and FAD

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

Pyridoxamine
Pyridoxine
Pyridoxal
All of these

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Vitamins and Coenzymes
The symptoms of retinol excess are

nausea
all of these
bone fragility
weakness

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Vitamins and Coenzymes
The absence of ascorbic acid in the human diet gives rise to

beri-beri
cataract
pernicious anemia
rickets

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