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Questions and Answers
What is the main function of enzymes in living organisms?
What is the main function of enzymes in living organisms?
- Prevent metabolic reactions
- Change their structure in every reaction
- Decrease the reaction rate
- Speed up chemical reactions (correct)
What is the role of the substrate in the Lock and Key Model of enzyme action?
What is the role of the substrate in the Lock and Key Model of enzyme action?
- The molecules before they react, complementing the active site (correct)
- The enzyme that catalyzes the reaction
- The shape of the enzyme molecule
- The product made in a reaction
How does an increase in temperature affect enzyme activity?
How does an increase in temperature affect enzyme activity?
- Slows down reactions by increasing vibrations
- Increases collisions between molecules, enhancing reaction rates (correct)
- Speeds up reactions by decreasing kinetic energy
- Causes denaturation by reducing molecular movement
What happens to an enzyme if the temperature is too high?
What happens to an enzyme if the temperature is too high?
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How can a low temperature affect enzyme-catalyzed reactions?
How can a low temperature affect enzyme-catalyzed reactions?
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What effect does pH have on enzyme activity?
What effect does pH have on enzyme activity?
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What is meant by the term 'optimum temperature' for enzymes?
What is meant by the term 'optimum temperature' for enzymes?
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