Functions of Protein

Protein has a range of essential functions in the body, including the following:

•    Required for building and repair of body tissues (including muscle)
•    Enzymes, hormones, and many immune molecules are proteins
•    Essential body processes such as water balancing, nutrient transport, and muscle contractions require protein to function.

Functions of carbohydrates

As a source of energy: The main function of carbohydrate is to supply energy for the body processes. A greater part of the energy in the diet i.e more than 50-80%) is supplied by carbohydrates. Some of the carbohydrates are immediately utilized by the tissues and the remaining is stored as glycogen in the liver and muscles and some are stored as adipose tissues for future energy needs.

Nutrients

The nutrients are essential for biosynthesis. To run life human beings and other organisms performs some key functions termed as nutrition. This is one of the basic functions of life in which includes intake of food, digestion, absorption, assimilation and egestion of food. These exist mainly three categories of substances which provide energy to body when we take food. These substances and their characteristics are discussed below.