Review the results of the following experiment. 30
24
18
Relative Rate of Enzyme Action
12
6
0
0
10 20
30 40 50 60 70 80 90 100
Temperature (°C)
Which hypothesis most likely explains the results at 60°C and 70°C?
A. The enzyme has changed shape because of the high temperature.
B. The bonds in the substrate are weakened at high temperatures.
C. The substrate has been used up because of the high temperature,
D. The enzyme is only effective at very high temperatures.