Unit 7

• Carbohydrates:

  • essential nutrients which are broken down into sugar called glucose
  • glucose is the fuel that your cells use for respiration, to release energy for life processes
• Proteins:

  • broken down into animo acids during digestion
  • important for making new cells for growth and repair damaged tissue in the body
  • it is also needed to make haemoglobin and antibodies
• Fats:

  • broken down into nutrients glycerol and fatty acids
  • They help to insulate our bodies to stay warm, are a source of energy and they make up our cell membrane
• Energy stores:

  • you can get almost all your energy from the carbohydrates and fats that you eat
  • you can get energy from proteins if you run out of those
  • you store a little but of carbohydrate (short-term stories) in your body cells
  • you store quite a lot of fat (long-term store), in special cells underneath the skin and around some body organ