Enzymes

• The enzymes in our digestive system break down complex substances into simpler ones which can be absorbed.
• Amylase breaks down carbs/starch into glucose.
• Protease breaks down protein into amino acids.
• Lipase break down fat into fatty acids molecules and glycerol.
• The place where substrates fit is called active site.
• Enzymes work when the substrate fit perfect in active site.
• This tight fit allows enzymes to catalyse the reaction and spilt into products.
• What is lock and key theory?

  When the substrate has a tight fit.
• Enzymes found in body work best at normal temp 37 degrees
• 37 degrees is their optimum temp where it has max collisions, max kinetic energy and max es complex's
• Anything higher than optium temp can damage or denature the enzymes
• Denaturing is when active sites change shape so the substrate no longer fits
• Low temperatures means low rate of collision, low es complexs and low kinetic energy
• Most enzymes apart from protease work best in neutral conditions pH 7
• Anything higher or lower than pH 7 damages or denatures the enzymes
• The more enzymes the faster the reaction because there are more active sites for the substrate to fit to
• But the speed will level off when there isnt enough substrate to react with enzymes