Factors affecting enzymes

• Give 2 factors that affect enzymes

  Temperature

  pH
• What does the term 'optimum' mean for enzyme temperature?

  The temperature at which enzyme activity is highest
• What effect does extremely high pH have on enzymes?

  Denatures them
• Which two of the following statements about enzymes are true?

  The shape of an enzyme is crucial for its activity

  Enzymes break down food during digestion
• Explain how increasing the temperature can cause an enzyme to denature.

  High temperatures start to break the bonds holding the enzyme together 

  This causes the enzyme and it's active site to change shape

  This means the enzymes active site will no longer be complementary to the substrate