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Review enzyme kinetics
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Enzyme kinetics
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What to do now
Review enzyme kinetics
Weak and due for review after recent practice.
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Practice · Enzyme kineticsQuestion 3 of 6
Passage question
Based on the experimental results, which mechanism most directly explains why the reaction rate plateaus at high substrate concentration?
AReduced enzyme concentration
BCompetitive inhibition
CSubstrate saturation
DIncreased activation energy
Correct — C. Substrate saturation
Once available active sites are occupied, adding more substrate cannot increase the rate. The plateau therefore reflects Vmax rather than competitive inhibition.
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