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.Management Sciences
Category: Vitamins
All are true about glutathione except ?
A. It is a tripetide
B. It converts hemoglobin to methemoglobin
C. It conjugates xenobiotics
D. It scavenges free radicals and superoxide ions
Vitamin B12 acts as a coenzyme to which one of the following enzyme ?
A. Isocitrate dehydrogenase
B. Homocyteine methyl transferase
C. Glycogen synthase
D. G-6-P dehydrogenase
Which is the by product of the urea cycle_______________?
A. Aspartate
B. Succinate
C. Ornithine
D. Fumarate
Biological activity of tocopherols has been attributed, in part to their actions as_____________?
A. Antioxidant
B. Anticoagulants
C. Provitamin
D. Antidotes for selenium poisoning
Which of the following is the poorest source of vitamin C ?
A. Milk
B. Cabbage
C. Guava
D. Radish
Thyroxine and catecholamines are derived from_____________?
A. Tyrosine
B. Tryptophan
C. Alanine
D. Leucine
Sources of the nucleotide portion of NAD include__________________?
A. N-methyl nicotinamide
B. Riboflavin
C. PRPP
D. Tryptophan
The daily requirement of protein for the adults is_________________?
A. 6 gms
B. 60 gms
C. 120 gms
D. 250 gms
One molecule of B-carotene gives rise to______________?
A. 1 unit of Vitamin A
B. 2 unit of Vitamin A
C. 3 unit of Vitamin A
D. 4 unit of Vitamin A
Non essential amino acids are not_____________?
A. Used by the body
B. Forming part of the proteins
C. Required in the diet
D. Absorbed in the intestines
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