Loading…
Answer each question and check where every mark went.
- 1
Question 1
Fig. 1.1 shows the rate of activity of two enzymes, pepsin and amylase, measured across a range of pH values.
Loading…
9 marksOpen › - 2
Question 2
A student investigated the effect of temperature on the rate of starch breakdown by amylase. She placed equal volumes of starch solution and amylase in test tubes at five different temperatures. At regular intervals she tested for starch using iodine solution and recorded the time taken for starch to disappear. Table 2.1 shows her results.
Loading…
10 marksOpen › - 3
Question 3
Fig. 3.1 shows the stages of enzyme action.
Loading…
9 marksOpen › - 4
Question 4
A biological washing powder contains protease and lipase enzymes. The manufacturer states it works best at 30 °C and should not be used above 50 °C.
Loading…
8 marksOpen ›