#Question id: 3050
#XL - S Microbiology
Agar is well suited as a solidifying agent because
A. it has been melted in boiling water
B. it can be cooled to about 40 to 42°C before hardening
C. it will not melt again until the temperature rises to about 80 to 90°C.
D. most microorganisms cannot degrade it.
#Question id: 3051
#XL - S Microbiology
You have 10^10 cell/L of bacterial stock solution. To prepare 1 liter of growth medium containing 1000 bacteria, the volume in microlitre of this stock solution that should be added is
#Question id: 3052
#XL - S Microbiology
How many average CFU will form on petriplate if 0.1ml sample plating from 104 diluted sample (original sample contain 3x10^7 bacteria per ml)
#Question id: 3053
#XL - S Microbiology
Bacterial culture contains 1000/ mL in the exponential growth phase. If you consider a generation time of 20 minutes, the total number of organisms / mL 60 minute will be
#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