Final answer:
To calculate the efficacy killing rate of a drug, LD50 and ED50 values are required, which signify the dosage needed to kill or affect 50% of a test population.
Step-by-step explanation:
The calculation of the efficacy killing rate of a drug can be related to the concepts of LD50 (lethal dose-50%) and ED50 (effective dose-50%), which are standardized measures used in toxicology to express the toxicity and efficacy of substances. Specifically, these metrics are used to determine the dose required to kill 50% of a test population (LD50) or to cause a significant response in 50% of a test population (ED50). Half-life is another important pharmacokinetic parameter that represents the time taken for the concentration of a drug to reduce to half its original value.
For a drug that kills 12% of certain cells per day, to calculate the efficacy killing rate, one would need additional information on the dosage and the specific context in which the percentage kill rate was determined. Further studies or experiments would typically be conducted to find a dose-response curve that includes the LD50 and/or ED50 values. Such data would enable a more precise calculation of a drug's efficacy in a given population over a set timeframe.