Four pesticides P1 to P4 are reversible inhibitors of an enzyme E that is essential for the growth of a bacterium B. Their Ki values are given in the table below. Each of these four pesticides is used in four geographically different regions R1 to R4. The residual concentrations of these four pesticides in the respective regions are also shown in the table below:
Which pesticides will be able to inhibit bacteria ?
My question : I know that Ki shows the binding affinity. So, how is that related to residual concentration ? How can I deduce whether it will kill the bacteria or not ?
Unrelated question : Is it acceptable to use the word pesticide here ?!