(a)[3]
Use one straight line from each box on the left to the box on the right that gives the correct description.
(b(i))[1]
State the two kinds of digestion.
(b(ii))[2]
Define enzyme.
(b(iii))[1]
Give one example of a digestive enzyme and the substrate on which it acts.
(b(iv))[2]
Suggest why the human digestive system has to produce many different enzymes.