65.   At time zero, you added 10 cells to a culture medium. …

65.   At time zero, you added 10 cells to a culture medium.  If you allowed the cells  to divide 5 times, how many cells will be in the culture at the end of the  experiment.               A. 10;       B.  20;       C.  32;       D.  160;       E.  320

76.       The following results were obtained from a broth d…

76.       The following results were obtained from a broth dilution test for microbial susceptibility test.  The organisms were grown and then sub-cultured. KEY: + = growth; – = no growth.   Antimicrobial conc.     Visible growth          Growth in sub-culture   A. 160ug                               –                                       – B. 80ug                                 –                                       – C. 40ug                                 –                                       – D. 20ug                                 –                                      + E. 10ug                                 –                                       + F. 5ug                                   +                                      +  G. 2.5ug                                +                                      +   What is the minimal inhibitory concentration (MIC)? (2pt) —————————   What is the minimal bactericidal concentration (MBC)? (2pt).- ———————-