Rate of an Enzyme-Catalysed Reaction as a Function of Varying

question 43

Multiple Choice

Rate of an enzyme-catalysed reaction as a function of varying reactant concentration, with the concentration of enzyme constant
In the figure, why does the reaction rate plateau at higher reactant concentrations?

• A) Feedback inhibition by product occurs at high reactant concentrations.
• B) Most enzyme molecules are occupied by substrate at high reactant concentrations.
• C) The reaction nears equilibrium at high reactant concentrations.
• D) The rate of the reverse reaction increases at high reactant concentrations.

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