Enzymes

• What is an enzyme

  An enzyme is a protein molecule that speeds up ( catalyzes ) a specific chemical reaction in the body .
• What is a substrate?

  It is the reactant in an enzymatic reaction.
• What is active site?

  An active site is the specific part of the enzyme that the substrate binds to .
• Why does an enzyme act only on a specific substrate?

  An enzyme acts only on a specific substrate because only that substrates fits into its active site .
• How are digestive enzymes classified?

  Digestive enzymes are classified on their target substrate .
• What are the factors that affect enzyme function?

  Temperature and PH
• Describe how Temperature affects the enzyme?

  Enzymes function best at body temperatures ( about 40°C ) . when it is cooked below this temperature the enzymes do not collide with the substrates frequently , when it goes above this or heated they denature .
• what does it mean to DENATURE?

  Denature means that the active sites changes its shape so that the substrates do not attach.
• Describe how PH affects the enzymes

  Most enzymes function properly at neutral PH ( PH= 7 ) , most enzymes found in the stomach function at acidic PH ( PH= 2 ) .
• ENZYMES OF THE HUMAN DIGESTIVE SYSTEM