Resistant and nonresistant E. coli bacteria samples were spread on the agar plates below and incubated for 24 hours.  The streptomycin negative with resistant E. coli. appears spread throughout the plate.The streptomycin positive with resistant E. coli. appears spread throughout the plate.The streptomycin negative with non-resistant E. coli. appears spread throughout the plate.The streptomycin positive with non-resistant E. coli. appears concentrated at three points on the plate. Select the true statements from the list below.Check All That ApplyThe resistant E. coli strain grows on streptomycin negative plates.The resistant E. coli strain grows on streptomycin negative plates.The nonresistant E. coli strain grows on streptomycin negative plates.The nonresistant E. coli strain grows on streptomycin negative plates.The nonresistant E. coli strain grows the same on streptomycin positive or negative plates.The nonresistant E. coli strain grows the same on streptomycin positive or negative plates.The resistant E. coli strain grows on streptomycin positive plates.The resistant E. coli strain grows on streptomycin positive plates.Both resistant and nonresistant E. coli strain show no growth on streptomycin positive plates.

Which of the following apply to the development of streptomycin resistance in E. coli?Check All That ApplyThe E. coli population has genetic variation.The E. coli population has genetic variation.The selective agent is streptomycin.The selective agent is streptomycin.The mutation resulting in streptomycin resistance is random.The mutation resulting in streptomycin resistance is random.E. coli changes its gene structure to become antobiotic resistant in the presence of streptomycin.

contaminated the agar platecontaminated the agar platecontained information conferring resistance to Aureo-mycincontained information conferring resistance to Aureo-mycinchanged its response to Aureomycin as a result of being exposed to the antibioticchanged its response to Aureomycin as a result of being exposed to the antibioticwas susceptible to both penicillin and Aureomycinwas susceptible to both penicillin and Aureomycinemigrated from another area of the agar plate

If there is NO zone of inhibition present, the bacteria is said to be ____ to the antibiotic. susceptibleintermediately susceptibleresistant

A sterile agar plate, I, is streaked with a pure culture of bacteria by means of aseptic techniques. Paper discs treated with the antibiotics Aureomycin (A) and penicillin (P) are placed at opposite sides of the plate, as shown in the diagram above. The plate is examined after a 24-hour incubation period, and a clear ring is discovered around disc A, but not around disc P. Within the clear ring around disc A, a single bacterial colony with physical characteristics like those of the pure culture is observed. A second sterile agar plate, II, is then streaked with this single colony and also incubated with antibiotics.

Bacteria from three different cultures were plated on agar plates containing ampicillin, an antibiotic. The number of colonies that grew on each plate can be seen in the graph below. If you assume that 100 bacteria were plated on each plate, what percentage of the bacteria on plate B were resistant to ampicillin?multiple choice3%0%10%100%