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← ScienceWhich outcome occurs when reactant concentration significantly exceeds enzyme concentration in enzymatic reaction?
A)Reaction rate plateaus at Vmax✓
B)Equilibrium shifts towards reactants
C)Enzyme inhibition decreases substrate binding
D)Activation energy increases for reaction
💡 Explanation
When reactant concentration overwhelms enzyme concentration, enzyme active sites become saturated because all enzymes are constantly processing substrates, thus reaction rate reaches its maximum possible value, Vmax. Therefore the reaction rate plateaus at Vmax, rather than shifting equilibrium or affecting other factors which are dictated by independent mechanisms.
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