Multiple Choice
Which of the following analogies best describes the induced-fit model of enzyme-substrate binding?
3. Acids and Bases
Reaction Mechanism
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Which of the following statements best describes the induced fit model of enzyme activity?
A
The enzyme changes shape to better fit the substrate upon binding.
B
The enzyme and substrate fit together perfectly without any change in shape.
C
The enzyme is permanently altered after the reaction with the substrate.
D
The substrate changes shape to fit the enzyme's active site.
Verified step by step guidance1
Understand the concept of the induced fit model: This model suggests that the enzyme is flexible and can change its shape to accommodate the substrate more effectively upon binding.
Identify the key feature of the induced fit model: The enzyme undergoes a conformational change to better fit the substrate, enhancing the catalytic activity.
Evaluate the given statements: Compare each statement with the key feature of the induced fit model to determine which one aligns with the concept.
Analyze the first statement: 'The enzyme changes shape to better fit the substrate upon binding.' This aligns with the induced fit model as it describes the enzyme's flexibility and conformational change.
Conclude by selecting the statement that best describes the induced fit model: The first statement is correct as it accurately reflects the enzyme's ability to change shape to fit the substrate.
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