Differences between Rod cells and Cone cells

S.N Rod cells Cone cells 1. They are more in number. They are less in number. 2. They respond to lower light intensities. They respond to bright light intensities. 3. Usually located around the periphery of retina. Usually located in the centre of retina. 4. They contain pigment rhodopsin. They contain iodopsin. 5. A small … Read more

Principal vitamins and its function

Vitamins            Function Deficiency A(retinol) Rhodopsin synthesis, normal health of epithelial cells, and bone and tooth growth. Rhodopsin deficiency, night blindness, retarded growth, skin disorders, and increased infection risks. B1(thiamine) Involved in carbohydrate and amino acid metabolism, necessary for appetite and good health, aids in normal functioning of nervous system. Beriberi- muscle weakness, neuritis and … Read more