Potato Enzyme Lab

Find the reaction on the top of the Enzyme Action lab procedure page. What is the reactant in this reaction?

• hydrogen (H2)

• hydrogen peroxide (H2O2)

• water (H2O)

• catalase

• oxygen (O2)

Which of the following is the foam made of?

• Hydrogen Peroxide (H2O2)

• catalase

• potatoes

• water and oxygen (H2O + O2)

• hydrogen

Look at the Research Question for Part A. What was the independent variable in Part A?

• temperature

• pH

• amount of catalase

• potatoes

• height of foam

To set up the independent variable for Part A, what did we do?

• put different enzymes in different test tubes

• put different amounts of catalase in different test tubes

• put different amounts of vinegar, bleach and water in different test tubes

• put different test tubes in different temperatures

• put different amounts of hydrogen peroxide in different test tubes

Read Research Question B. What is the independent variable in Part B?

• temperature

• pH

• amount of catalase

• height of foam

• potatoes

What will we need to do to set up the independent variable in Part B?

• put different amounts of catalase in different test tubes

• put different amounts of vinegar, bleach, and water in different test tubes

• put different amounts of hydrogen peroxide (H2O2) in different test tubes

• put different test tubes in different temperatures

• not use hydrogen peroxide

For Part B, what will we not need to do? (select ALL that we do not need to do)

• put different test tubes in different temperatures

• put different amounts of bleach, vinegar, and water in different test tubes

• use catalase

• use hydrogen peroxide (H2O2)

• use pH strips to test the pH

What is the name of the enzyme that speeds up the reaction in both Part A and Part B but is NOT a reactant or product of the reaction?

• catalase

• catalyst

• potato

• hydrogen peroxide (H2O2)

• bromelin

How much catalase should you use in Part B?

• a different amount than you used in Part A

• 3 drops

• 3 dropperfuls

• 3 milliliters

• we shouldn't use catalase in Part B

How much hydrogen peroxide should you use in Part B?

• 3 milliliters

• 3 drops

• 3 dropperfuls

• a different amount than you used in Part A

• we shouldn't use hydrogen peroxide in Part B