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Aitchison College Academic Resources.
9 Which effect does a gradual decrease in pH from 13 to 1 have on the action of amylase?
A
B
c
D
slows it down only
slows it down then speeds it up
speeds it up only
speeds it up then slows it down
10 An enzyme in potato cells causes oxygen to be produced from hydrogen peroxide.
Cubes of potato were incubated with hydrogen peroxide at different temperatures.
The numbers of bubbles of oxygen released per minute were counted at each temperature.
The table shows the results.
terpeaiure PC
15
3B | 3 | 45 [55
number of butibles /bubbles par minute
om | 82|;%)|1
The results suggest the optimum temperature for the enzyme is between which two values?
A
B
c
D
11. Which
digesti
15°C and 35°C
35°C and 45°C
35°C and 55°C
45°C and 55°C
igestive enzyme?
A
rate of
reaction
rate of
reaction
graph shows the effect of temperature between 20°C and 35°C on the activity of a human
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