1. Carbohydrate consist of the elements carbon, hydrogen and oxygen. 
  2. The H : O ratio in all carbohydrate molecules is 2 : 1.
  3. Examples of carbohydrate include starch, sugar, glycogen and cellulose.
  4. Excess carbohydrates are stored in the form of glycogen in the liver. Some are converted to fat and stored in the adipose tissues below the skin and around organs.
  5. There are three types of carbohydrates:
    1. Monosaccharides
    2. Disaccharides
    3. Polysaccharides