Microbiology LearnSmart Lab Module 07 Quiz

Microbiology LearnSmart Lab Module 07 Quiz Question 1 1 out of 1 points Which test utilizes hydrogen peroxide and the observation of gas bubble formation when attempting to identify an unknown bacterium? Selected Answer: Catalase test Question 2 1 out of 1 points All of the following are methods that can be used to isolate bacteria from a mixed culture EXCEPT? Selected Answer: Gram staining Question 3 1 out of 1 points The feld of study in which medicine and microbiology intersect is known as medical microbiology Selected Answer: Tru e Question 4 0 out of 1 points The absence of hemolysis on a blood agar plate is referred to as _______ hemolysis Selected Answer: Bet a Question 5 1 out of 1 points Which of the following bacterial species would be most likely to grow in bile esculin medium and hydrolyze the esculin? Selected Answer: Enterococcus faecalis Question 6 1 out of 1 points Which test uses a medium that is both selective and differential for members of the genus Staphylococcus? This study source was downloaded by from CourseH on :53:39 GMT -05:00 This study resource was shared via CourseHSelected Answer: Mannitol Salt agar Question 7 1 out of 1 points How do you determine the species of an unknown bacterium? Selected Answer: You use standard tests and pre-existing knowledge to classify the bacterium. Question 8 1 out of 1 points Gram-positive cocci in chains would be called staphylococci. Selected Answer: Fals e Question 9 1 out of 1 points The complete clearing or hemolysis that a bacterial isolate may produce on blood agar is called alpha hemolysis Selected Answer: Fals e Question 10 1 out of 1 points Identifcation of a bacterial species cannot be made on microscopic morphology alone because __________. Selected Answer: Many organisms have a similar microscopic morphology Question 11 1 out of 1 points Which of the following is a characteristic of members of the resident microbiota? Selected Answer: Resident microbiota can compete with and limit growth of harmful bacteria. Question 12 1 out of 1 points Impetigo, a type of inflammatory skin infection, is caused by__________ Selected Answer: Staphylococcus aureus This study source was downloaded by from CourseH on :53:39 GMT -05:00 This study resource was shared via CourseHQuestion 13 1 out of 1 points Before attempting to identify an unknown bacterial species, the organism must be isolated in a pure culture Selected Answer: Tru e Question 14 1 out of 1 points A microorganisms that is most often harmless but may occasionally cause infection and disease if defenses are compromised is referred to as an opportunistic pathogen. Selected Answer: Tru e Question 15 1 out of 1 points The _________ test involves using rabbit plasma as a reagent and its results are determined by observation of thickening of the medium. Selected Answer: Coagula se Question 16 1 out of 1 points All of the following body sites normally have large numbers of resident microbiota EXCEPT? Selected Answer: Bloo d Question 17 1 out of 1 points The Gram stain is an example of a test that can be used to determine the ______ characteristics of a bacterium? Selected Answer: Morphologi cal Question 18 1 out of 1 points A bacterial isolate grown on a mannitol salt agar plate changes the pink agar to yellow and produces bright yellow colonies. This indicates that the isolate is _______ for mannitol fermentation. Selected Positi This study source was downloaded by from CourseH on :53:39 GMT -05:00 This study resource was shared via CourseHAnswer: ve Question 19 1 out of 1 points When a large zone of no growth is found around an antibiotic disc being used for identifcation purposed, this generally means that the microbe is ______ to the antibiotic Selected Answer: Sensiti ve Question 20 1 out of 1 points All of the following infections are frequently cause by Staphylococcus and Streptococcus species EXCEPT? Selected Answer: Diarrh ea This study source was downloaded by from CourseH on :53:39 GMT -05:00 This study resource was shared via CourseH Powered by TCPDF ()