Multiple Choice
According to the induced fit hypothesis of enzyme catalysis, which of the following best describes the interaction between an enzyme and its substrate?
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6. Enzymes and Enzyme Kinetics
Enzyme-Substrate Complex
Multiple Choice
How is an enzyme able to speed up a chemical reaction?
A
By lowering the activation energy required for the reaction to proceed
B
By providing additional reactants to the reaction
C
By increasing the temperature of the reaction environment
D
By permanently binding to the substrate and preventing product formation
Verified step by step guidance1
Understand the role of enzymes in biochemical reactions: Enzymes are biological catalysts that speed up chemical reactions without being consumed in the process.
Learn the concept of activation energy: Activation energy is the minimum energy required for a chemical reaction to occur. Enzymes work by lowering this energy barrier, making it easier for the reaction to proceed.
Explore how enzymes interact with substrates: Enzymes bind to specific substrates at their active site, forming an enzyme-substrate complex. This interaction stabilizes the transition state and reduces the activation energy.
Clarify why enzymes do not provide additional reactants or increase temperature: Enzymes do not add reactants to the reaction or increase the temperature; they work by facilitating the reaction under existing conditions.
Understand why enzymes do not permanently bind to substrates: Enzymes release the product after the reaction is complete, allowing them to catalyze additional reactions. Permanent binding would prevent the enzyme from functioning effectively.
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