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- Why are Koch’s postulates important?Describe the lines of proof Robert Koch used to definitivelyassociate the bacterium Mycobacterium tuberculosis with thedisease tuberculosis. How would his proof have been flawedif any of the tools he developed for studying bacterialdiseases had not been available for his study of tuberculosis?discuss the unique capacity of the Deinococci to tolerate desiccation and high dosses radiation
- a. Using table as a reference, find and explain the differencesbetween the results for Staphylococcus and Pseudomonas. Are anyof these drugs broad spectrum?b. Explain the difference in the MIC of E. coli for penicillin versusampicillin.Will autotrophic organisms contain more or less 12Cin their organic compounds than was present in the CO2that fed them? Why would SIP using 15NO32 not beuseful for identifying bacteria carrying out nitraterespiration?Describe a key physiological feature of the following Bacteriathat would differentiate each from the others: Acetobacter,Methylococcus, Azotobacter, Photobacterium, Desulfovibrio, andSpirillum.
- Enteric bacteria, lactic acid bacteria, and propionic acidbacteria have distinctive metabolic traits that can be used tocharacterize and identify these organisms. Describe themetabolic characteristics of these organisms, name a genusthat belongs to each group, and indicate in what way theseorganisms can be differentiated.Give typing answer with explanation and conclusion 1) What is selected to grow on MacC, MSA, and EMB, then tell me how different organisms are differentiated based on fermentation. Specifically, which plate differentiates E.coli from other coliforms? Which plate selects for staphylococcus?1- Explain the germicical action of agno3 and hgcl2 2- Why does concentrated hno3 acid stain the kin yellow 3- explain the use of heat as an agent of sterlization. cite examples where heat is used as an agent of sterlization 4- offer an explination why picric acid and tannic cid are used in the treatment of burns . 5- cite some practical applicayions of detnaturation