MCB 2289LMicro LearnSmart mod 9 quiz .

1. The oxidase test determines the presence of cytochrome oxidase enzyme. This enzymes functions as part of Genotypic identification methods examine the DNA sequence of an organism 2. All of the following biochemical tests involve the growth of an organism in a specific liquid broth medium EXCEPT 3. In the Kligler's Iron Agar (KIA) test, if an organism can only ferment glucose, the butt of the agar slant turns , and the slanted surface of the agar will be after 24 hours of incubation. 4. Which of the following would be most valuable to confirm the identification of microorganisms isolated during a food poisoning outbreak? 5. If an organism produces stable acids as an end-product of glucose fermentation, the methyl red test will be red, indicating a positive result Which methods used in bacterial identification usually require culturing of the unknown bacteria? Phenol red carbohydrate broths with Durham tubes can detect all of the following EXCEPT 6. The internationally recognized reference for bacterial classification and identification is called Bergey's Manual 7. Which of the following types of media allows for the observations of multiple biochemical properties in one? 8. When performing the urease test, which of the following color changes is expected if the organism is positive for urease production? Which reagent is added to SIM medium to detect indole production? 9. An organism has been shown to produce hydrogen sulfide and indole in its metabolism. These are examples of characteristics that can be helpful in the identification of the microorganism. 10. Which of the following is true of a bacterial species that produces dark colonies when grown on MacConkey agar. 11. Which of the following are examples of physiological (biochemical) characteristics used in the bacterial identification process?