Enzymes The enzymes are biological catalysts produced by living cells which catalyze the biochemical reactions in living organisms.
Vitamins These are organic compounds which cannot be produced by the body and must be supplied in small amounts in diet for the normal health, growth and maintenance of body.
Protein Proteins are the polymer of amino acids. These are large biomolecules that occur in every living organism. Protein is essential for the growth of body.
The chemical name of vitamin C is ascorbic acid. It is soluble in water. The sources of vitamin C are citrus fruits, green vegetables, etc. The deficiency of vitamin C causes scurvy.