ACT Science Practice Question #1755 (Hard (520)) | Test Citadel
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ACT Science Difficulty: Hard (520)

Digital ACT Science Practice Question #1755

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Based on Table 1, as substrate concentration increases from 5 mM to 160 mM, the reaction velocity: Experiment Context (Enzyme Kinetics of Catalase): Researchers measured the initial reaction velocity (V_0, in umol/min) of bovine catalase across increasing hydrogen peroxide (H2O2) substrate concentrations at 25°C and pH 7.0: Table 1: - 5 mM H2O2: V_0 = 42 umol/min - 10 mM H2O2: V_0 = 74 umol/min - 20 mM H2O2: V_0 = 118 umol/min - 40 mM H2O2: V_0 = 152 umol/min - 80 mM H2O2: V_0 = 168 umol/min - 160 mM H2O2: V_0 = 171 umol/min
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Identify asymptotic plateau near 171.

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Reaction velocity exhibits typical saturation kinetics (Michaelis-Menten curve)....

Distractor Analysis: Trap choice eliminates careless test-takers who confuse roots with coordinates...

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