MCB 2289L Microbiology LearnSmart Lab Module 09 Quiz

 Question 1 1 out of 1 points Which of the following types of media allows for the observations of multiple biochemical properties in one? Selected Answer: SIM media Answers: Urea agar MacConkey agar SIM media Citrate media  Question 2 1 out of 1 points Phenol red carbohydrate broths with Durham tubes can detect all of the following EXCEPT Selected Answer: Nitrate reduction Answers: Nitrate reduction Acid production Gas production Fermentation  Question 3 1 out of 1 points Which of the following are examples of physiological (biochemical) characteristics used in the bacterial identifcation process? Selected Answer: Presence of a specifc enzyme Answers: Gram stain Cell shape Presence of a specifc enzyme This study source was downloaded by from CourseH on :10:07 GMT -05:00 This study resource was shared via CourseHGrowth in a nutrient broth  Question 4 1 out of 1 points Which of the following would be most valuable to confrm the identifcation of microorganisms isolated during a food poisoning outbreak? Selected Answer: Identifcation of microorganisms using microscopic, cultural, and physiological characteristics Answers: Growth on agar plates to identify colony morphology Grain stain to view cellular morphology Identifcation of microorganisms using microscopic, cultural, and physiological characteristics  Question 5 1 out of 1 points Which reagent is added to SIM medium to detect indole production? Selected Answer: Kovac's reagent Answers: Methyl red reagent Phenol red Zinc powder Kovac's reagent  Question 6 1 out of 1 points All of the following biochemical tests involve the growth of an organism in a specifc liquid broth medium EXCEPT Selected Answer: SIM test Answers: Nitrate reduction test SIM test Phenol red carbohydrate fermentation test This study source was downloaded by from CourseH on :10:07 GMT -05:00 This study resource was shared via CourseHMethyl red test  Question 7 1 out of 1 points Which methods used in bacterial identifcation usually require culturing of the unknown bacteria? Selected Answer: Phenotypi c Answers: Immunolo gic Genotypic Phenotypi c Morpholog ic  Question 8 1 out of 1 points 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. Selected Answer: Yellow; red Answers: black; yellow Red; yellow Yellow; red Yellow; black  Question 9 1 out of 1 points The internationally recognized reference for bacterial classifcation and identifcation is called Bergey's Manual Selected Answer: Tru e Answers: Tru e False This study source was downloaded by from CourseH on :10:07 GMT -05:00 This study resource was shared via CourseH Question 10 1 out of 1 points When performing the urease test, which of the following color changes is expected if the organism is positive for urease production? Selected Answer: The agar changes from yellow to bright pink Answers: The agar changes from yellow to bright pink The agar changes from red to yellow The agar changes from blue to green The agar changes from colorless to black  Question 11 1 out of 1 points Which of the following is true of a bacterial species that produces dark colonies when grown on MacConkey agar. Selected Answer: They are lactose fermenters Answers: They are glucose fermenters They are lactose fermenters They produce urease They reduce nitrate to nitrite  Question 12 1 out of 1 points If an organism produces stable acids as an end-product of glucose fermentation, the methyl red test will be red, indicating a positive result. Selected Answer: Tru e Answers: Tru e False This study source was downloaded by from CourseH on :10:07 GMT -05:00 This study resource was shared via CourseH Question 13 1 out of 1 points The oxidase test determines the presence of cytochrome oxidase enzyme. This enzymes functions as part of _____________ Selected Answer: The electron transport chain Answers: The electron transport chain Glycolysis The citric acid cycle Fermentation  Question 14 1 out of 1 points An organism has been shown to produce hydrogen sulfde and indole in its metabolism. These are examples of _____ characteristics that can be helpful in the identifcation of the microorganism. Selected Answer: Physiologic al Answers: Morphologi cal Genotypic Physiologic al Immunologi cal  Question 15 1 out of 1 points Genotypic identifcation methods examine the DNA sequence of an organism Selected Answer: Tru e Answers: Tru e False This study source was downloaded by from CourseH on :10:07 GMT -05:00 This study resource was shared via CourseH Powered by TCPDF ()