Nutrition, is the nourishment required by organisms and cells to stay alive.
Most of the structures that make up animals, plants and microbes are made from three basic classes of molecules : amino acids, carbohydrates and lipids Nutrition is the provision, to cells and organisms, of the energy and molecules necessary to support life.
Nutrition, is the nourishment (is the supply of materials – food ) required by organisms and cells to stay alive. Most of the common health problems such as scurvy, beriberi, osteoporosis, diabetes and cardiovascular disease can be prevented or alleviated with good nutrition. Nutritional science investigates the metabolic and physiological responses of the body through the study of metabolism and metabolic pathways, the sequences of biochemical steps through which the many substances of living things change from one form to another.
Most of the structures that make up animals, plants and microbes are made from three basic classes of molecules : amino acids, carbohydrates and lipids (often called fats). As these molecules are vital for life, metabolism focuses on making these molecules, in the construction of cells and tissues, or breaking them down and using them as a source of energy, in the digestion and use of food. Many important biochemicals can be joined together to make polymers such as DNA and proteins and these macromolecules are essential parts of all living organisms.