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Multiple Choice
Which statement best describes enzyme function in catalysis?
A
Enzymes increase the activation energy of a reaction.
B
Enzymes change the equilibrium position of a reaction.
C
Enzymes are consumed in the reaction they catalyze.
D
Enzymes provide an alternative reaction pathway with a lower activation energy.
Verified step by step guidance
1
Understand the role of enzymes in catalysis: Enzymes are biological catalysts that speed up chemical reactions without being consumed in the process.
Recognize the concept of activation energy: Activation energy is the minimum energy required for a reaction to occur. Enzymes work by lowering this energy barrier.
Identify the effect of enzymes on reaction pathways: Enzymes provide an alternative pathway for the reaction, which has a lower activation energy compared to the uncatalyzed pathway.
Clarify the misconception about equilibrium: Enzymes do not change the equilibrium position of a reaction; they only affect the rate at which equilibrium is reached.
Conclude with the correct statement: The best description of enzyme function in catalysis is that enzymes provide an alternative reaction pathway with a lower activation energy.