FOOD GROUPS

FOOD GROUPS

1. WE NEED FOOD FOR

   • fuel for energy
   • growth/repair of tissue
   • to stay healthy

2. FOOD GROUPS

   • carbohydrates
     • 5%of body mass
     • broken down into glucose
       • starch, cellulose and glycogen are all polymers
     • main fuel for energy
   • Lipids/fats+Oils
     • contain carbon, hydrogen and oxygen
     • an essential part of cell structure
       • insulation- reduces heat loss
     • 10% of body mass
     • long term energy store
     • glycerol+fatty acids
   • proteins
     • 18% of body mass
     • for growth and repair and enzymes
     • amino acids

3. MINERALS

   • Calcium
     • making teeth and bones
   • phosphorus
     • part of DNA
   • sodium
     • in blood
   • magnesium
     • bone development
   • iron
     • helps carry oxygen in blood

4. VITAMINS

   • D
     • growing bones
   • A
     • light senietive chemical in retina
   • C
     • fibres of a conective tissue
   • B
     • respiration