An unknown Gram-negative organism was inoculated on a variety of selective and differential media. The results for the eosin methylene blue (EMB) agar plate are shown below. Based on the observed growth, which of the following organisms can be eliminated from the list of possible bacteria used for the inoculation? EMB plate

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

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

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

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

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?

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?