Under a particular set of conditions in the lab,the enzyme in a chemical reaction is saturated.Which of the following alterations to the reaction will increase the rate at which substrate is converted to product?
A)increasing the concentration of substrate in the reaction
B)increasing the amount of enzyme in the reaction
C)increasing the volume of the reaction without increasing the amount of substrate or enzyme
D)decreasing the temperature of the reaction

Question

Quizplus · Accepted Answer

When an enzyme is saturated, it means that all of its active sites are occupied by substrate molecules. Increasing the concentration of substrate will not increase the reaction rate because there are no free active sites on the enzyme. Increasing the amount of enzyme will provide more active sites for the substrate to bind to, thus increasing the rate of reaction. Increasing the volume of the reaction without increasing the amount of substrate or enzyme simply dilutes the reaction mixture, which does not affect the rate of reaction. Decreasing the temperature generally slows down reactions by decreasing the kinetic energy of the molecules involved.

Under a Particular Set of Conditions in the Lab,the Enzyme