The various nutrients we derive from that food is used to maintain our body in a healthy state. The conversion of food to energy begins as soon as it enters the body. Proteins are broken down into amino acids, which are then used as the building blocks for other proteins. They must be broken down through the process of digestion into forms the body can use. Carbohydrates and lipids are also broken down into useable forms.
Carbohydrates provide a source of quick energy for man.
Fat is also a necessary component in animal diets. Fat is important in the conduction of nerve impulses throughout the nervous system. Food provides many types of nutrients which must be changed into a small number of compounds for use in the body. The breaking of chemical bonds is an important process in cellular bioenergetics. ATP must be generated and broken down to ADP so that energy will be produced.