The Figure Displays the Relationship Between Initial Rate of Product

question 44

Multiple Choice

The figure displays the relationship between initial rate of product formation and reactant concentration in an enzyme-catalyzed reaction with a fixed amount of enzyme. Which of the following statements best explains the shape of the rate curve at high reactant concentration?

• 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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