Blog

A Gram-positive cocci that is positive for mannitol fermentation and DNase is most likely

Phenylethyl alcohol agar is a(n) _______________ medium containing an ___________.

The final day of the bacterial examination of water study is known as the 

Calculate the total dilution of the E. coli culture in tube 4 in the dilution scheme shown below.

Two different organisms were inoculated into fluid thioglycolate broth. Following incubation the results shown below were observed. Tube A is an uninoculated control. The organism in tube B is most likely a(n)   

 Which of the following is the correct name for the structures indicated in the picture below?

Which of the following is NOT true concerning the staining procedure from the previous question?

What type of dye must be used in the simple stain procedure shown above?

The same organism used to inoculated the MacConkey agar and glucose sugar fermentation broth from the previous question was used to inoculate a Kilgler’s Iron Agar (KIA). Which of the following tubes most correctly shows the result you would expect for this organism when inoculated into KIA?  

A sample is collected from one of the positive tubes from the lactose tubes above and inoculated on an Endo agar plate. Based on the growth following inoculation, does the sample likely have fecal contamination?