Catalase is an enzyme that speeds up the decomposition of hydrogen peroxide into water and oxygen. The influence of temperature on catalase activity was investigated, and the findings are displayed in Fig. 8.1.
(a(i))[1]
State the temperature at which catalase shows the greatest activity in Fig. 8.1.
(a(ii))[1]
Explain why there is no enzyme activity at 60^{\circ}C.
(b)[1]
State one factor, apart from temperature, that affects enzyme activity.
(c)[5]
Draw one straight line from each enzyme to the insoluble molecule it acts on. Then draw another line from each enzyme to the smaller soluble molecule formed. Make six lines in total.
Worked solution & mark scheme
This 8-mark question has a full step-by-step worked solution and mark scheme. One marking point: “33^{\circ}C” …