<prompt> The persistent suppression of bacterial growth that may occur after limited exposure to some antimicrobial drug is called :Time dependent killingPost antibiotic effectConcentration dependent killingSequential blockade  <response>: Time dependent killing kinetics is shown by aminoglycosides. Here, the killing activity depends upon the length of time, plasma concentration is above MIC.Concentration dependent killing is shown by β lactam drugs. Here, killing activity depends upon the ratio of plasma concentration to MIC.Post-antibiotic effect is the suppression of bacterial growth after limited exposure to the antibiotic. 