1. Warm-Up
Answer the following questions in complete sentences.
What bonds (attaches) to an enzyme at the enzyme’s active site?
The _______________ binds to the enzyme at the enzyme’s active site.

2. UNIT 3
Catalase Lab
What happens to hydrogen peroxide (H2O2) when you put it on a cut?
What happens when you put it on the table?
What makes H2O2 turn to O2?

3. Catalase Lab – Turn and Talk
UNIT 3
Catalase Lab – Turn and Talk
With a partner, answer all seven questions verbally.
By yourself, choose three to answer on a piece of paper and turn it into the back.
The person to go first is…
peroxide
oxygen

4. Catalase Lab – Turn and Talk
UNIT 3
Catalase Lab – Turn and Talk
The substrate in the reaction was…
The enzyme in the reaction was…
I knew the reaction was taking place because…
The product in the reaction was…
Adding water to hydrogen peroxide had no effect because…
On the graph, I see the activation energy here (point). The enzyme affected the reaction by…
The boiled enzyme did not change the reaction because…

5. Closure Answer the following question in a complete sentence:
Name/Nombre
Date/Fecha
Period ____
Answer the following question in a complete sentence:
How does an enzyme catalyze a chemical reaction?
Suggested sentence stem:
An enzyme catalyzes a chemical reaction by…