Other questions in this quiz

2. What is an enzyme?

  • A microorganism
  • A biological catalyst
  • Something which is changed during a reaction

3. What enzyme breaks down carbohyrates?

  • Lipases
  • Amylase
  • Carbohydrases
  • Proteases

4. Chewing food in the mouth is a form of physical digestion. What is the other form?

  • Water and minerals being absorbed into the blood by the large intestine
  • The liver making bile
  • Squeezing food in the stomach
  • The conversion of starch into maltose and then glucose

5. What is the pH of bile? Why is this good for the enzymes?

  • Alkaline- helps the mouth chew more food
  • Alkaline- neutralises acid to make the conditions right for enzymes
  • Acid- helps to contribute to the low pH in the stomach
  • Acid- gives enzyme a greater surface area to work on


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