Enzyme Activity Worksheet
Grade 12 Science worksheet focusing on enzyme activity, factors affecting it, and enzyme kinetics.
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Enzyme Activity Worksheet
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Read each question carefully and provide thorough answers. For multiple-choice questions, select the best option. For short answer questions, use complete sentences and scientific terminology where appropriate.
1. Which of the following best describes the function of an enzyme?
To increase the activation energy of a reaction.
To act as reactants in a biochemical pathway.
To lower the activation energy of a reaction.
To be consumed during a biochemical reaction.
2. What happens to an enzyme when it is denatured?
Its active site becomes more efficient.
It loses its three-dimensional structure and function.
It gains new catalytic properties.
Its substrate binding affinity increases.
3. The specific region on an enzyme where the substrate binds is called the .
4. Enzymes are biological catalysts, primarily composed of .
5. An increase in temperature generally the rate of enzyme activity up to an optimal point.
6. Explain the 'lock and key' model and the 'induced fit' model of enzyme-substrate interaction. How do they differ?
7. Describe two factors that can affect enzyme activity and explain how each factor influences the rate of reaction.
8. Analyze the provided diagram illustrating a simple mechanism of enzyme reaction. Label the enzyme, substrate, and products, and briefly describe the steps involved.
9. All enzymes function optimally at a pH of 7.
True
False
10. Enzyme inhibitors can reduce the rate of enzyme-catalyzed reactions.
True
False
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