Question

Study Bring Lab Practical Study NNNN CHALLENGE QUESTION You are given an unknown bacterium to identify. You do some initial testing and determine that the bacterium is a Gram-negative, motile rod with no unique colony morphology or pigmentation when grown on an agar plate. Given the following metabolic profiles for six known Gram-negative rods. create a dichotomous key which will guide the testing of your unknown bacterium. List all of the tests that you will need to run. (You should not have to run every single one.) Bacterial Species Indole MR VP Citrate HS Gel Urea Citrobacter freundi 0 + Edwardsiella tarda + Enterobacter aerogenes E. coli + 300 Morganella morganii Proteus mirabilis * acid in 5 days Dichotomous key: А

make a dichotomous key

Answer 1

Answer of question-

Gram-negative Rods Cocci oxidase Glucose fermented Mitrate reduced Neisseria flavescens Glucose oxidized Acid and gas from lactose. Neisseria mucosa. Neissena Sicca. Proudontonas Growth at 480 e+ Pseudomonas aeruginosa Ctrate, utilized white Red pigment od 25 26 colonies Yellow colonies Pseudomonas fluorescens Serratia marcescens Indole produced El MR uptes H₂S produced Proteus mirabilis MR-negative ve-positive Enterobacter assagens MR positive Pregative citrobacter freundil Proteus vulgaris Morganella morganii