Question
Question: Look at the graph given below. The reaction rate the reaction can be increased beyond point C by:...
Look at the graph given below. The reaction rate the reaction can be increased beyond point C by:
A
increasing the amount of substrate
B
adding more water
C
increasing the temperature
D
decreasing enzyme concentration
Answer
increasing the temperature
Explanation
Solution
At point C the enzyme is saturated with substrate so adding more substrate (option 1) does not help. Adding water (option 2) would only dilute the reaction, and decreasing enzyme concentration (option 4) would lower the rate further. However, increasing the temperature (option 3) increases the kinetic energy of molecules and the rate constant (within optimum limits), thus increasing the reaction rate beyond point C.