Question

factors affect the rate of an enzyme - catalyzed reaction. the student chooses to study amylase, a common enzyme found in human saliva that breaks down starch into simple sugars. the student sets up a series of experiments, measuring the rate at which amylase breaks down starch under varying conditions of temperature, ph, and substrate concentration. the students data is compiled in the following graphs: based on the information, if the student moved the amylase enzyme from a test tube at 37°c to a test tube at 4°c, what would be the short - term effect on the enzymes activity, and why? the activity would stop, because the enzymes active site has been permanently altered the activity would decrease, because the molecules have less kinetic energy, reducing the frequency of collisions with the substrate the activity would decrease, because the cold temperature causes the enzyme to denature the activity would increase, because the molecules have more kinetic energy to react

Explanation:

Enzyme activity is affected by temperature. Lower temperatures reduce the kinetic energy of molecules, decreasing the frequency of collisions between the enzyme and substrate. This leads to a decrease in the rate of the reaction. Denaturation usually occurs at high temperatures, not cold ones, and the active - site is not permanently altered at 4°C.

Answer:

The activity would decrease, because the molecules have less kinetic energy, reducing the frequency of collisions with the substrate.