The amino acid from which niacin synthesized is_______________?
(A) Tyrosine
(B) Tryptophan
(C) Threonine
(D) Histidine
1st clinical sign of vitamin A deficiency is_____________?
(A) night blindness
(B) bitot’s spots
(C) xerostomia
(D) conjunctival xeroses
The mineral having sparing action on Vitamin E_______________?
(A) Chromium
(B) Iron
(C) Iodine
(D) Selenium
Two Vitamin whose derivatives are involved in transformation of serine to glycine are_____________?
(A) B6 ad B12
(B) B12 and nicotinamie
(C) Folic acid and B6
(D) Folic acid and B12
Which vitamin is related to a co-factor in glycine metabolism is______________?
(A) Vit E
(B) Folic acid
(C) Thiamine
(D) Cobalamine
Tryptophan load test helps in the evaluation of deficiency of the vitamin______________?
(A) Folic acid
(B) Niacinamide
(C) Pyridoxine
(D) Cyano cobolamine
Vitamin C is present in largest amount in the body in____________?
(A) Eye
(B) Kidneys
(C) Testes
(D) Adrenal cortex
The following vitamin is important in non-oxidative decarboxylation, transamination and transsulfuration reactions_____________?
(A) Riboflavin
(B) Thiamine
(C) Pyridoxine
(D) Pantothenic acid
Most of vitamin B12 in the body is stored as_____________?
(A) Methyl B12
(B) Hydroxy B12
(C) Cyano cobalamine
(D) None of the above
Which of the following is not true of Vit D_______________?
(A) Its active form is calcitriol
(B) Increase calcium absorption from the intestines
(C) Its deficiency results in rickets
(D) Its decrease cause phosphate reabsorption from the kidneys