When testing the temperature of catalase in the enzyme lab, why did the higher temperature affect the catalase activity

Explanation:

Generally, the rate of a reaction catalyzed by an enzyme increases as temperature increases. However, when the temperature becomes higher or too "extreme" for the enzyme, the rate of reaction begins to slow down because most enzymes (in this case catalase) are proteins and they get denatured as a result of high temperature. Hence, the higher temperature affect the catalase activity because the temperature denatures the structure of the catalaze making it inactive.