(a(i))[1]
Use the information in Fig. 6.1 to name the section of the alimentary canal where enzyme Q is active.
(a(ii))[6]
Using your knowledge of the ‘lock and key’ hypothesis of enzyme action, explain why enzyme Q is active only in this region of the alimentary canal and not in any other region.
(b)[3]
Carbon is found in all enzymes. Name three further chemical elements that must be present in every enzyme molecule.