What is the effect of enzyme concentration and pH on it's ability to function? In this lab, students will use potato puree as a source of catalase enzyme. They will change the concentration and pH of the potato puree, and measure it's ability to break down peroxide (H2O2) into water and oxygen.

Materials needed per group:

• Potato puree
• Spot plate or petri dishes
• Beaker
• Hydrogen peroxide
• Hole punched paper disks
• Tweezers
• Stopwatch
• Vinegar
• Bleach

This lab is fully editable, so you can change the procedures if needed, or add a section where students test the impact of temperature on enzyme efficiency.