Final answer:
The MBC cannot be determined by an extension of the MIC.
Step-by-step explanation:
The statement "The MBC may be determined by an extension of the MIC" is False. MIC stands for Minimum Inhibitory Concentration, which is the lowest concentration of an antimicrobial that inhibits the growth of a particular organism. MBC stands for Minimum Bactericidal Concentration, which is the lowest concentration of an antimicrobial that kills the organism.
MIC and MBC are different endpoints used to assess the efficacy of antimicrobial agents. While MIC determines the concentration required to inhibit the growth of the organism, MBC determines the concentration required to kill the organism.
In conclusion, the MBC cannot be determined by an extension of the MIC, as they measure different actions of antimicrobial agents.