Hormones
1. Hormones are produced in the endocrine or ductless glands.
2. Hormones are not stored in the body. These are produced as and when required.
3. They are effective in low concentration. Their excess or deficiency may cause hormonal disorders.
4. Hormones influence the genes to produce specific enzymes required during metabolism.
5. Example: Insulin
Vitamins
1. Vitamins (except Vitarnin – D) are not produced in the body. Vitamin must be supplied in the diet.
2. Vitamins are stored in the body upto certain extent.
3. They are needed in small quantity. Excess vitamins are excreted. Their deficiency causes
4. malfunctioning called deficiency diseases or avitaminosis.
5. They act as co-enzymes and help enzymes to perform their function.
6. Example: Vitamin A, B, C, D, E and K
