The following data were obtained in the presence and absence of inhibitor. What type of inhibition is shown? $\begin{array}{|l|l|l|}
\hline\begin{array}{l}
\text { Substrateconcentration } \
\text { millimolar) }
\end{array} & \begin{array}{l}
\text { Rate withoutinhibitor } \
\mathrm{mmol} / \mathrm{min})
\end{array} & \begin{array}{l}
\text { Rate with inhibitor } \
\mathrm{mmol} / \mathrm{min})
\end{array} \
\hline 0.100 & 2.5 & 1.6 \
\hline 0.200 & 4.2 & 2.9 \
\hline 0.500 & 6.6 & 5.1 \
\hline 0.750 & 7.4 & 6.2 \
\hline 1.000 & 9.9 & 9.8 \
\hline 2.000 & 10.0 & 10.1\
\hline
\end{array}$
A) competitive
B) uncompetitive
C) noncompetitive
D) irreversible
E) cannot tell inhibition type from the information given

Question

Quizplus · Accepted Answer

The inhibitor decreases the rate of the reaction at all substrate concentrations, but the Vmax is not affected. This is characteristic of competitive inhibition.

The Following Data Were Obtained in the Presence and Absence