Hypothetically make the Dichotomous key for Micrococcus luteus, Bacillus subtilis, Bacillus, Megaterium, Bacillus cereus, E.coli, Serratia Marcescens, and Enterobacter aerogenes based on colony morphology. results of catalase test, (lactose, sucrose and glucose fermentation tests) and other biochemical tests for its accurate identification.

which of these tests (i.e gram stain, acid fast stain, endospore, oxidation to fermentation, catalase test, oxidase test, PCR test, urea hydrolysis test, aglutination test, northern and southern test.) can be used on the disease causing organism below that can help draw a flow chart or ditochomy key? And will the test results in positive or negative to these these. -Viral gastroenteritis-Plague-Staphylococcal Scalded Skin Syndrome -Cryptosporidiosis -Peptic Ulcer Disease-Campylobacteria Disease-Beef Tapeworm Infestation-C. Diff Diarrhea-Traveler's Diarrhea

What is the result of this biochemical test in the gelatin deep?  Which enzyme is this testing for? What tool is used to inoculate this medium? Gelatin positive liquid, use needle, protease,

please explain Bacillus cereus and its  shape, arrangemnet, why indole test, starchhydrolysis test, and citrate utilization test were need to use to idetify the bactria?