-For the enzyme-catalyzed reaction shown in Figure 6.2,which of these treatments will cause the greatest increase in the rate of the reaction if the initial reactant concentration is 1.0 micromolar?
A)doubling the activation energy needed
B)cooling the reaction by 10°C
C)doubling the concentration of the reactants to 2.0 micromolar,while reducing the concentration of enzyme by half
D)doubling the enzyme concentration

Question

-For the enzyme-catalyzed reaction shown in Figure 6.2,which of these treatments will cause the greatest increase in the rate of the reaction if the initial reactant concentration is 1.0 micromolar?
A)doubling the activation energy needed 
B)cooling the reaction by 10°C 
C)doubling the concentration of the reactants to 2.0 micromolar,while reducing the concentration of enzyme by half 
D)doubling the enzyme concentration

Quizplus · Accepted Answer

Doubling the enzyme concentration increases the number of active sites available for the reaction, thus increasing the reaction rate. Changes in temperature, activation energy, or reducing enzyme concentration while increasing reactant concentration generally do not increase the reaction rate as effectively as increasing enzyme concentration.

-For the Enzyme-Catalyzed Reaction Shown in Figure 6