Respiration and metabolism

• Respiration

  process of transferring energy from glucose which goes on in every cell
• How energy transferred is used

  -to build larger molecules from smaller ones like proteins from amino acids

  -in animals to allow the muscles to contract

  -in mammals and birds to keep body temperatures steady
• Metabolism

  -lots of glucose molecules are joined together to form starch, glycogen and cellulose

  -lipid molecules are made from 1 glycerol and 3 fatty acids

  -glucose is combined with nitrate ions to make amino acids and then made into proteins
• Breaking down molecules

  -glucose is broken down in respiration which transfers energy to power all the reactions in the body

  -excess protein is broken down to produce urea