13 answers to your questions about vitamins


This organic compound of vitamins is a very popular one and it can be difficult to weed out the truths from the myths. Here are answers to the 13 most frequently asked questions to help you get some perspective.

13 answers to your questions about vitamins

What are vitamins?

Vitamins are organic compounds that human tissues cannot synthesize but that are required for normal growth and development and must be included in diet.

Write down some important sources of vitamins for a human body?

Vitamins are supplied both by animal and plant sources. Some of the important sources are: vegetables, egg yolk, milk, fish, oils, whole-grain cereals, yeast, liver, wheat, grams, meat and fruits.

What are main classes of vitamins?

Vitamins are classified into two main classes.
  1. Water-soluble e.g., biotin, niacin, vitamin B & C.
  2. Fat-soluble These include vitamins A, D, E and K.

Define co-enzymes?

Vitamins and their derivatives often serve as cofactors for enzymes. Vitamin cofactors are called as co-enzymes.

Does antibiotic therapy affect vitamins?

It causes deficiency of vitamins.

Write the name of co-factors required for function of vitamin Niacin and Riboflavin?

Niacin requires Nicotinamide-adenine dinucleotide and its phosphate i.e., NAD and NADP as cofactors.
Riboflavin needs flavin mononucleotide & flavin dinucleotide (FMN & FDN) as co-factors.

What is ascorbic acid?

 It is cofactor of vitamin C.

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

TPP, Biocyatin, THF and retinal are coenzyme forms of thiamin. biotin, folic acid & vitamin A respectively.

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

Vitamin D = Poor muscular development, Rickets.
Vitamin E = Anemia, Male sterlity Malfunction of nervous system.
Vitamin K = Slow blood clotting

Where biosynthesis of biotin takes place?

It takes place in intestine by intestinal microorganism.

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

Vitamin D.

What are important functions performed by vitamin C?

As: It is a protective agent and acts as antioxidant. It help in biosynthesis of collagen and hormones.

What are important sources of nicotinic acid?

Sources of nicotinic acid include yeast, liver, legumes and meals.

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