Final answer:
Enzymes can be inactivated under certain conditions such as high temperatures, extreme pH levels, or the presence of specific inhibitors.
Step-by-step explanation:
Enzymes can be inactivated under certain conditions such as high temperatures, extreme pH levels, or the presence of specific inhibitors. High temperatures can cause enzymes to denature and lose their shape, rendering them inactive. Changes in pH can also disrupt the enzyme's structure and prevent it from functioning properly. Additionally, specific inhibitors can bind to enzymes and either temporarily or permanently inactivate them.