BIOMOLECULES AND ENZYMES

Detailed explanation-1: -For humans, vitamin D is not available in large enough quantities in food. The human body synthesizes the vitamin when exposed to sunlight, and this is the best source of vitamin D. Different vitamins play different roles in the body, and a person requires a different amount of each vitamin to stay healthy.

Detailed explanation-2: -Vitamins have different jobs to help keep the body working properly. Some vitamins help you resist infections and keep your nerves healthy, while others may help your body get energy from food or help your blood clot properly. By following the Dietary Guidelines, you will get enough of most of these vitamins from food.

Detailed explanation-3: -Not necessarily. The quality of vitamins is dependent on the amount of actual nutrients in each dose, and expensive vitamins may also contain fillers or undesirable material. Look for a vitamin that meets the recommended daily allowance and has been tested by a third-party organization.

Detailed explanation-4: -Vitamins are classified as either water-soluble or fat-soluble. In humans there are 13 vitamins: 4 fat-soluble (A, D, E, and K) and 9 water-soluble (8 B vitamins and vitamin C).

Detailed explanation-5: -Vitamins and minerals do not provide energy themselves. However, they do perform many vital functions in the process of converting proteins and carbohydrates into fuel that the body can use, so eating food rich in vitamins and minerals can make you feel more energetic.