Enzymes: The Body's Catalysts
A Grade 7 science worksheet exploring the function, properties, and importance of enzymes in biological processes.
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Enzymes: The Body's Catalysts
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Read each question carefully and provide your best answer. Some questions may require you to recall information about enzymes and their functions.
1. What is the primary function of an enzyme in the body?
To store energy
To speed up chemical reactions
To transport oxygen
To build muscle tissue
2. Which of the following is NOT a characteristic of enzymes?
They are specific to certain reactions.
They are used up in chemical reactions.
They are proteins.
They function best at an optimal temperature and pH.
1. Enzymes are biological that speed up the rate of chemical reactions.
2. The specific molecule an enzyme acts upon is called its .
3. The area on the enzyme where the substrate binds is known as the site.
1. All enzymes work best at very high temperatures.
True
False
2. Enzymes are typically made of lipids.
True
False
1. Explain why a change in pH can affect an enzyme's activity.
2. Describe one example of an enzyme at work in the human body.
Observe the diagram below showing the 'lock and key' model of enzyme action, then answer the questions.
1. In the diagram, which part represents the enzyme and which part represents the substrate?
2. What happens to the enzyme after the reaction is complete?
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