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6. Enzymes are...

  • Specific (they must match the shape of the active site)
  • Adaptable (they don't have to match the shape of the active site)

7. The sequence of the amino acids gives the protein its identity and properties...

  • True
  • False

8. Does an enzyme and a substrate react together or just join?

  • Join
  • React

9. Amylase...

  • Catalyses the breakdown of starch
  • Removes starch

10. Optimum means the best value for the enzyme to work

  • True
  • False

11. What are proteins made of?

  • Cells
  • DNA
  • A chain of smaller molecules called amino acids
  • Enzymes

12. Proteins are not a chemical group

  • False
  • True

13. The explanation of how enzymes work is called...

  • The lock and key theory - just as a key will only open one lock, an enzyme will only work on one type of substrate
  • The enzyme-substrate complex

14. The shapes must fit together for the enzyme to catalyse the breakdown of the substrate

  • True
  • False

15. Each enzyme has it's own optimum...

  • pH and temperature
  • pH
  • Temperature

16. The place where on an enzyme where a substrate attaches is called...

  • The active site
  • The lock and key

17. A protein will have...

  • No amino acids
  • Hundreds or even thousands of amino acids
  • One amino acids
  • 23 amino acids

18. Which proteins control all the chemical reactions which occur in cells?

  • Muscle tissue
  • Enzymes
  • Hormones

19. What is the substrate for amylase?

  • Starch
  • Hydrogen peroxide
  • Enzyme

20. What will happen if an enzyme is boiled?

  • The shape of its active site will change and the substrate will no longer fit
  • Nothing