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← ScienceWhich consequence results when a catalyst saturates in an enzyme reaction?
A)Maximum reaction rate does not increase✓
B)Equilibrium shifts favor product formation
C)Activation energy of reaction increases
D)Substrate concentration falls to zero
💡 Explanation
Because enzyme active sites are fully occupied, the maximum reaction rate plateaus; the mechanism, enzyme saturation, means adding more substrate does not accelerate the reaction. Therefore, rate plateaus, rather than increasing the overall speed, because all enzymes are already occupied by substrate.
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