Use the chart to answer questions 9-11.
(9) If enzyme C is functioning at 25°C and a pH of 7,
under which conditions would the rate of enzyme
action probably increase?
a. The temperature is decreased to 22 °C and the
pH is kept the same.
b. The temperature is kept the same and the pH is
decreased to 6.
c. The temperature is increased to 44 °C and the
pH is kept the same.
d. The temperature is increased to 30 °C and the
pH is increased to 8.
15 °C
Enzyme
25 °C
A
B
C
D
(10) At what temperature would enzyme D most likely be denatured?
Effective
Temperature
Range (°C)
60-80
30-40
20-38
20-27
Optimum
pH
3
3.5
9
7