The function of vitamin A is/are related to which of the following ?

Related Mcqs:

In humans and other primates as well as in guinea pigs, this vitamin cannot be synthesized because of the absence of the enzyme L-gulonolactone oxidase: the vitamin is_____________?

A. Pantothenic acid B. Nicotinic acid C. Ascorbic acid D. Folic acid...

Xerophthalmia is caused by_______________?

A. Vitamin A deficiency B. Vitamin D deficiency C. Vitamin C deficiency D. Vitamin K deficiency...

In maple syrup urine disease the amino acids excreted in the urine are______________?

A. Leucine B. Isoleucine C. Valine D. All of the above...

Glutamine replaced by valine in sckle cell anaemia is characterized________________?

A. Non Sense mutation of beta chain B. Missense mutation of beta chain C. Degradation of beta chain D. Deletion of beta chain...

In Hartnup’s disease _______ is excreted in the urine?

A. Ornithine B. Glutamine C. Tryptophan D. Phenylalanine...