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← ScienceWhich outcome occurs when reactant concentration stays constant during catalysis?
A)Rate law becomes zero order✓
B)Inhibitors block all active sites
C)Catalyst deactivation occurs rapidly
D)Activation energy increases significantly
💡 Explanation
The reaction rate depends only on catalyst concentration when substrate achieves saturation; the enzymatic reaction proceeds via Michaelis-Menten kinetics until reaching Vmax. Therefore, the rate law is zero order because [S] is no longer rate-limiting, rather than other factors.
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