Respiration and metabolism

• The process of transferring energy from glucose which goes on in every cell
• How organisms use the energy

  1. go build up larger molecules from smaller ones
  2. in animals it’s used to allow the muscles to contact
  3. in mammals energy is used to keep their body temp
• Metabolism is all the chemical reactions in an organism
• Reactant ———-> product ———->

  Enzyme
• • Lots of small glucose molecules are joined together in reactions to form starch, glycogen and cellulose
  • lipid molecules are each made from one molecules or glycerol and fatty acids
  • glucose is combined with nitrate ions to make amino acids
• Larger molecules broken down into smalller ones

  • glucose is broken down in respiration
  • excess protein is broken down in a reaction to produce urea