enzymes

• what are enzymes 


  they’re catalysts produced by living things
• what is a catalyst 


  it’s a substance which increases the speed of a reaction without being changed or used up.
• what does every enzyme have

  an active site with an unique shape
• why do enzymes only catalyse one specific reaction

  for enzyme to work the substrate had to fit into its active site
• what happens if the substrate doesn’t match the enzymes active site

  the reaction won’t be catalysed
• what happens if an enzyme gets too hot

  it becomes denatured
• what is an optimum temperature 


  a temperature which enzymes work best at
• what affects enzymes 


  pH , if it’s too high or low enzyme denatures