#Question id: 3054
#XL - S Microbiology
A pure culture in exponential growth phase has a bacterial concentration of 6.4 x 10^8 cells/ml. If the bacterium has a generation time of 1 h, how long ago was the cell concentration 8.0 x 10^7 cells/ml?
#Question id: 3055
#XL - S Microbiology
300 CFU will form on petriplate if 0.1ml sample plating from 10^6 diluted sample. Original sample contain bacteria per ml is
#Question id: 3056
#XL - S Microbiology
Ten bacteria were inoculated into a rich medium. If at the end of ten hours the total number of cells is 10^4, then the number of elapsed generations and the generation time respectively is
#Question id: 3057
#XL - S Microbiology
Mean generation time of bacteria is 20 min. 6 hours of incubation, the bacterial population increases from 10^3 cells to
#Question id: 3058
#XL - S Microbiology
A urine sample with more than 100,000 organisms is considered indicative of infection. A urine sample containing 5,000 bacteria, with a generation time of 30 minutes, sits for 3 hours before finally being assayed. How many bacteria will then be present within the sample
#Question id: 3060
#XL - S Microbiology
A bacteria having doubling time of 1 minute, fills a cylindrical vessel completely in 3 hours. How much time will it take to fill half of the vessel?