enzymes

• describe enzymes

  biological catalysts that increase rate of reaction with active sites complementary to catalyse specific reactions
• describe formation of enzymes

  proteins formed of long chains of amino acids
• describe active site

  area where substrate bids to enzyme complementary to specific substrate of reaction through its unique shape
• describe affect of active site

  uncomplimentary active site means substrate will not fit and reaction will not be catalysed
• describe lock and key model

  1. complimentary substrate binds to enzyme through active site
  2. form enzyme substrate complex
  3. enzyme breaks down / builds up substrate
  4. products released
• give factors affecting enzyme action

  temperature and pH
• describe affect of temperature and pH on enzyme actions

  non optimal causes enzyme denature
• describe enzyme denature

  change to shape of active site meaning uncomplimentary to substrate so will not bind or catalyse reaction
• describe cause of enzyme denature

  bonds holding enzyme together start to break