Unit 1 Home Lab 2: Enzymes

Points: 40p

Fill in the following table. Compare all cups. Use relative terms to describe the size and number of bubbles in each cup. For instance, describe the Number of Bubbles using the terms: No bubbling, Moderate bubbling, Good bubbling, Very good bubbling. To describe average bubble size use the terms: Very small, Small, Large, or Very large. To describe pH without access to pH detectors, simply use the pH chart earlier in this chapter to describe each as acidic, neutral, or basic. To describe the Catalase Activity, use your data on the size and number of bubbles to estimate the amount of gas produced in the Catalase mediated process. Use the following terms: Very Low, Low, Moderate, High, Very high

Table 2.1. Catalase reaction observations.

Describe the activity of Catalase as pH increases. Do you think that other enzymes are likely to behave in this way as well? Why or why not.

Assume that you have a pH meter which would enable you to very accurately measure the pH of a solution. Describe an experimental design that would allow you to pinpoint the exact pH at which Catalase is the most active.

Regarding cup #1:
Describe the utility of cup #1 as a control.
What other material did you introduce to this cup? Describe what you observed. How does Catalase activity in the material you investigated compare to potato?