• the substances which provide energy and biomolecules necessary for carrying out the various body functions .

  n Nutrients are substance in food that Body use :

• To provide energy

• To provide materials for making the chemicals that are needed to make cell and other parts of body.

• different kinds

  of foods contain different nutrients .https://www.youtube.com/watch?v=2lqhJNgn_Wg

  
  

  protein, carbohydrate and fat

• protein is used for making new cells .protein is also used for making many impotent chemicals in the body ,such as enzymes ,cells can use portein to supply energy .

carbohydrate is used to provide energy .starch and sugar are two kinds of carbohydrate .

Fat also provides energy . fat can be stored in the body . Fat stores underneath the skin provide insulation .fat is needed to make new cell membranes.