-In Figure 6.2,why does the reaction rate plateau at higher reactant concentrations?
A)Feedback inhibition by the 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 activation energy for the reaction increases with reactant concentration.

Question

-In Figure 6.2,why does the reaction rate plateau at higher reactant concentrations?
A)Feedback inhibition by the 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 activation energy for the reaction increases with reactant concentration.

Quizplus · Accepted Answer

At high reactant concentrations, most enzyme molecules are occupied by substrate, leading to a situation where adding more substrate does not increase the reaction rate because all the active sites of the enzymes are already full. This is known as enzyme saturation.