2.4 – Enzymes (and respiration)

Pages 55 – 60 of the CGP revision notes.

Key questions

  • What are the main properties of enzymes?
  • How do enzymes work (E-S complex)?
  • How (and why) are enzymes affected by heat / pH?
  • What substrates and products are involved with amylase, protease and lipase enzymes? (A big area of weakness in your mock).
  • Which enzymes work in the mouth, stomach, small intestine?
  • What are the two key functions of bile?
  • What is definition of “respiration”?
  • What is the word equation for aerobic respiration?
  • What is the energy released in respiration used for?
  • In what two ways is the heart affected by exercise?
  • In what two ways is breathing affected by exercise?
  • How does exercise affect glycogen stores?
  • What is the difference between an/aerobic respiration?
  • What is the word equation for anaerobic respiration in muscles?
  • What is the oxygen debt?
  • How are enzymes used commercially in: detergents, food processing, industry?
  • What are the dis/advantages of using enzymes in industry?