When an enzyme's activity is destroyed by heat or a change in pH, the enzyme is said to be
A) broken.
B) toxic.
C) conjugated.
D) tertiary.
E) denatured.

Question

Quizplus · Accepted Answer

When an enzyme's activity is destroyed by heat or a change in pH, the enzyme is said to be denatured. Denaturation is the process in which the usual structure of a protein is disrupted. This can occur when an enzyme is subjected to high temperatures or extreme pH values, causing it to lose its function.

When an Enzyme's Activity Is Destroyed by Heat or a Change