(a(i))[2]
Suggest a method for measuring the progress of the reaction.
(a(ii))[2]
In the second experiment, the student cut each of the three remaining potato pieces to make six pieces, each measuring $10\ \text{mm} \times 10\ \text{mm} \times 10\ \text{mm}$. Keeping exactly the same conditions, the student measured the progress of the reaction and obtained results that were different from those in the first experiment. Explain why the results of the second experiment were different from the results of the first experiment.
(b)[1]
On Fig. 6.3, sketch a curve to show how temperature affects the activity of an enzyme such as catalase.