On which of the following types of media would you expect untransformed bacteria to grow on?

Under what circumstances can two species with identical niches coexist indefinitely?

You have 2 mL of bacterial culture. How would you make a 10^-2 dilution using the entire culture volume

You are working through the Gram Staining procedure on a mixed culture of S. aureus (G+) and E. coli (G-) (gram + & gram -) organisms respectively. If you accidentally use too much alcohol / acetone during the procedure, which of the following will likely happen? E. coliE. coli will appear to be Gram + will appear to be Gram +E. coli will appear to be Gram + S. aureus will appear to be Gram - Both organisms will appear colorless Both organisms will appear purple None of the answers are correct

you are given a mixed culture of s. aureus, E. coli and P. aeruginosa. how would you isolate each other from this mixed culture?( Besides using plate technique)

Compare and contrast bacteriocidal, bacteriostatic and bacteriolytic agents. What are their effects on the optical density (OD) and viable count of a bacterial culture, respectively?

The following ingredient list represents which type of growth media? Beef extract 1.5 g Yeast extract 3.0 g Peptone 6.0 g Glucose 1.0 g Agar 15.0 g water 1000 ml pH 6.6

How would you produce a 10^-1 dilution if a 3 mL bacterial sample using the entire 3 mL volume?  suppose your professor handed you a test tube with 2.0 mL of an E. coli broth culture in it and told you to make a 10^-1 dilution of the entire culture. Explain how you would do this. Show your calculations.

Which of the following is/are true regarding the acid-fast stain? (There may be more than one correct answer.) Non-acid-fast microbes appear blue in a completed acid-fast stain. O Acid-fast cells retain the primary dye after treatment with acid-alcohol. O It is used to identify members of the genus Mycobacterium. V Acid-fast cells appear bright pink/red in a completed acid-fast stain. O If cells are acid-fast, they are gram-negative.

What type of agar would you use to grow gram negative bacteria