b 12 vitamins

A doctor wishes to mix together two kinds of food, X and Y, in such a way that the mixture contains at least 10 units of vitamin A, 12 units of vitamin B and 8 units of vitamin C. The vitamin contents of one pound of food are shown. One po..

and minerals are responsible for regulating and coordinating the various activities of an organism along with enzymes (proteins..

Introduction - Vitamins are the organic compounds required for the normal maintenance and health of an organism in minute quantities and their absence cause specific deficiency diseases. These are required in diet in order to perform specific biological functions. There are about 15 ..

1 Chemically, it is known as thiamine and it is a water-soluble vitamin. It functions as a coenzyme during carbohydrate metabolism and in the synthesis of pentose sugar. The synthesis of pentose sugar also uses this vitamin as a coenzyme. It is essential for the functionin..

2 Chemically, it is known as riboflavin and is also a water-soluble vitamin. It forms two co-enzymes, FMN and FAD. These co-enzymes are dehydrogenases which carry out oxidation reactions. It promotes carbohydrate and protein metabolism. Riboflavin is necessary for healthy skin, nerv..

6 It is called pyridoxine and is water-soluble. It takes part in amino acid and fatty acid metabolism. Deficiency of pyridoxine causes depression, anaemia, dermatitis, diarrhoea and retardation of growth. The sources of pyridoxine are whole grains, leafy vegetables, yeast, milk, egg, liver, k..

Production of Vitamins - Vitamins can be produced on industrial scale by microorganisms. For e.g., Riboflavin (B 2 ) can be produced by Ashbya gossypii, Eremothecium ashybii Cobalamine (B 1 2 ) cause produced by bacteria propioni bacterium, Pseudomonas denitr..

This is a water soluble non-B complex vitamin known as Ascorbic acid. Intake of vitamin C cures common cold. Animals can synthesize ascorbic acid while man cannot synthesize due to the lack of an enzyme - gluconolactone oxidase. Vitamin C is helpful in wound..

Vitamins B complex and C are soluble in water. Vitamin B complex is a group of 11 vitamins..

Night blindness - It is caused by the deficiency of vitamin A, affects the rod cells of the retina. This leads to poor adaptation of eyes to dim or night light causing night blindness. The cornea and the conjunctiva also become dry. This condition is called xerophthalmia (dry eyes). Sever..