Q. What are co-enzymes forms of vitamin A, thiamin, biotin and folic acids?

Ans:     TPP, Biocyatin, THF and retinal are coenzyme forms of

thiamin, biotin, folic acid & vitamin A respectively.

Q. What are diseases caused by deficiency of Vitamin D, E and K respectively?

Ans:     Vitamin D = Poor muscular development, Rickets.

Vitamin E = Anemia, Male sterlity Malfunction of nervous system.

Vitamin K = Slow blood clotting.

Q. Where biosynthesis of biotin takes place?

Ans:     It takes place in intestine by intestinal micoorganism.

Q. Which of the fat-soluble vitamin is synthesized by human tissue?

Ans:     Vitamin D.

Q. What are important functions performed by vitamin C?

Ans:     It is a protective agent and acts as antioxidant. It helps in

biosynthesis of collagen and hormones.

Q. What are important sources of nicotinic acid?

Ans:     Sources of nicotinic acid include yeast, liver, legumes and

meals.