pH and Digestive Enzymes
Learning Objective
I can explain how pH affects the activity of digestive enzymes.
Key Concepts
Enzymes have a specifically shaped area called the active site where substrates can bind.
Enzymes are considered catalysts because they can be used over and over again and are not used up in the reaction.
If an enzyme's environment changes outside of its ideal pH or temperature range, the enzyme can become denatured, meaning it can no longer bind to its substrate.
Practice Questions
This lesson includes 3 practice questions to reinforce learning.
View questions preview
1. Explain how pH levels can affect the function of an enzyme, using the term 'denatured' in your answer.
2. The enzyme pepsin is found in the stomach. Predict the ideal pH range for pepsin and explain your reasoning.
3. Which of the following best describes what happens to an enzyme when it is exposed to a pH outside of its optimal range?
Educational Video
Enzymes (Updated)
Amoeba Sisters