Enzymes

• The lock-and-key theory of enzyme action proposes that the enzyme's active site and the shape of the substrate molecule are complementary to one another. This allows the substrate to fit into the enzyme, like how a key would fit into a lock. If the substrate doesn't fit, then the enzyme will not act on it.
• As the substrate concentration increases the rate of reaction will increase until the saturation point
• High temptress can cause enzymes to be denatured

  1. Temoature is to hot so bonds holding enzymes together will break
  2. Changes shape of active site so substrate can no longer fit into enzyme
  3. Enzymes is denatured (can't work)
• Rate= change / time
• Carbohyrases(enzyme) convert carbohydrates into simple sugars
• Protease(enzyme) convert protein in amino acids
• Lipases(enzyme) convert lipids(fat) into fatty acids and glycerol
• Where is protease found (sps)


  stomach, pancreas and small intestine
• Where is carbhydrase produced (s-g,p,s)


  salivary glands, pancreas and small intestine
• Where are lipase found mps


  mouth, pancreas and small intestine
• Most of the time when you eat starch where is it digested


  Small intesintes
• Give two reasons why we can't just make our cells even warmer to increase the rate of reactions?

  Requires alot of energy and can damage cells
• Explain how increasing the temperature can cause an enzyme to denature.


  High tempatures break bond between enzymes cause enzyme and active site to change shape so enzyme active site will no longer be complimentary to the substrate