biological molecules

• identify the chemical elements present in carbohydrates

  carbon

  oxygen

  hydrogen
• identify the chemical elements present in lipids (fats and oils)

  carbon

  oxygen

  hydrogen
• carbohydrates uses

  prime source of energy
• fats uses

  a store of energy
• protein uses

  growth and repair
• carbohydrates food eg

  pasta

  bread

  potatoe
• fats food eg

  chocolate

  avocado

  nuts
• identify the chemical elements present in proteins

  carbon

  oxygen

  hydrogen

  nitrogen

  sulfur

  phosphorus
• protein food

  chicken

  beef

  eggs
• catalyst

  a substance that changes the rate of a chemical reaction without being changed by the reaction itself
• what is protein

  an organic compound made up of amino acid molecules
• metabolism

  chemical processes that occur within a living organism in order to maintain life
• enzymes -what is it and role-

  enzymes are proteins that help speed up metabolism or the chemical reactions in our bodies. they build some substances and break others down. all living things have enzymes as our bodies naturally produce them
• active site

  the part of the enzyme that reacts with the substrate
• understand how temperature changes can affect enzyme function, including changes to the shape of active site

  This structure is held together by weak forces between the amino acid molecules in the chain. High temperatures will break these forces. The enzyme, including its active site, will change shape and the substrate no longer fit. The rate of reaction will be affected, or the reaction will stop.