Multiple Choice
Which type of catalyst is primarily responsible for affecting biochemical reactions?
31. Catalysis in Organic Reactions
Introduction to Catalysis
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Which of the following best describes how an enzyme affects the rate of a chemical reaction?
A
An enzyme decreases the rate of a chemical reaction by increasing the activation energy.
B
An enzyme increases the rate of a chemical reaction by lowering the activation energy.
C
An enzyme increases the rate of a chemical reaction by increasing the temperature.
D
An enzyme decreases the rate of a chemical reaction by lowering the temperature.
Verified step by step guidance1
Understand the role of enzymes: Enzymes are biological catalysts that speed up chemical reactions in living organisms.
Identify the concept of activation energy: Activation energy is the minimum energy required for a chemical reaction to occur.
Recognize how enzymes affect activation energy: Enzymes lower the activation energy, making it easier for the reaction to proceed.
Clarify the effect on reaction rate: By lowering the activation energy, enzymes increase the rate of the chemical reaction.
Eliminate incorrect options: Enzymes do not increase activation energy or temperature; they specifically lower activation energy to increase reaction rates.
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