Enzymes: Biological Catalysts
This worksheet covers the structure, function, and factors affecting enzyme activity at a Grade 10 Biology level.
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Enzymes: Biological Catalysts
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Read each question carefully and provide your best answer. Diagrams may be helpful for some questions.
1. What is the primary function of an enzyme in a biochemical reaction?
To increase the activation energy
To decrease the activation energy
To change the products of the reaction
To supply energy to the reaction
2. The region on an enzyme where the substrate binds is called the:
Allosteric site
Regulatory site
Active site
Inhibitor site
3. Enzymes are biological that speed up the rate of biochemical reactions.
4. The model describes how an enzyme's active site changes shape slightly to bind with the substrate.
5. A change in pH or temperature can cause an enzyme to lose its shape and function, a process called .
6. Explain the 'lock and key' model of enzyme action.
7. Describe two factors that can affect the rate of enzyme activity, and explain how each factor influences the enzyme.
8. Enzymes are consumed during the reactions they catalyze.
True
False
9. Each enzyme typically catalyzes only one specific type of reaction.
True
False
Match the term on the left with its definition on the right.
10. Substrate
a. The molecule upon which an enzyme acts
11. Product
b. A molecule that binds to an enzyme and reduces its activity
12. Inhibitor
c. The molecule(s) resulting from an enzyme-catalyzed reaction
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