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Vitamins and Coenzymes

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

fibrinogen
thrombin
prothrombin
fibrin

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

Pyridoxine
All of these
Pyridoxamine
Pyridoxal

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Vitamins and Coenzymes
Vitamins are essential because the organism

None of these
can synthesize these compounds partially
can't synthesize these compounds in the adequate amounts
can't synthesize these compounds at all

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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 reductant, NADH, transfers the electrons via a flavo-proteins to the specific disulfide (S-S) protein to form a dithiol (SH,SH) protein which converts vitamin

B12(Co) to B12(Co2+)
B12(Co2+)to B12(Co)
B12(Co+)to B12(Co2+)
B12(Co2+)to B12(Co+)

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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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