Question

1. what effect did heat have on the enzyme?

a. heat had no effect on the enzyme
b. heat caused the shape of the active site to change
c. heat caused the shape of the action station to change
d. heat caused the enzyme to melt into a different enzyme

Explanation:

Enzymes are proteins, and heat can cause them to denature. Denaturation changes the three - dimensional structure of the enzyme, specifically the shape of the active site (the region where the substrate binds). Option a is incorrect because heat does affect enzymes. Option c has incorrect terminology (there is no “action station” in enzyme structure). Option d is incorrect because heat does not cause an enzyme to “melt” into a different enzyme; it denatures the existing enzyme, and it doesn't become a different enzyme.

Answer:

b. heat caused the shape of the active site to change