ATI RN
microbiology an introduction 12th edition test bank Questions
Question 1 of 5
The basic method for routine mumps diagnosis is;
Correct Answer: B
Rationale: The correct answer is B: Isolation on cell cultures. This method is the gold standard for routine mumps diagnosis as it involves isolating the virus in cell cultures to confirm the presence of the mumps virus. PCR (choice A) is used for detecting viral RNA, not for routine diagnosis. ELISA (choice C) detects antibodies, not the virus itself. Immunofluorescence method (choice D) is used for visualizing viral antigens but is not as reliable as isolating the virus in cell cultures for diagnosis.
Question 2 of 5
Enzymes that remove functional groups from a substrate without adding water, or that add functional groups to a double bond, are called
Correct Answer: D
Rationale: The correct answer is D: lyases. Lyases are enzymes that catalyze the breaking of chemical bonds without the addition of water. They can remove functional groups from substrates or add functional groups to double bonds without the use of water. A: Oxidoreductases involve the transfer of electrons. B: Transferases transfer functional groups from one molecule to another. C: Hydrolases catalyze the breaking of bonds by adding water.
Question 3 of 5
The etiological agent of Q-fever is:
Correct Answer: B
Rationale: The correct answer is B: Coxiella burnetii. Q-fever is caused by the bacterium Coxiella burnetii. It is not caused by viruses like Bunyaviridae or Filoviridae. Rickettsia conorii causes Mediterranean spotted fever, not Q-fever. Coxiella burnetii is the only bacterium among the choices known to be the etiological agent of Q-fever.
Question 4 of 5
Sanitary control is applied to monitor the quality of:
Correct Answer: A
Rationale: The correct answer is A because sanitary control is crucial for monitoring the quality of a wide range of essential services to ensure public health and safety. Food safety, drinking water quality, cleanliness in restaurants, hygiene in healthcare settings, and transportation systems all fall under the purview of sanitary control. Therefore, option A is the most comprehensive and accurate choice. Option B is incorrect because it does not include monitoring restaurants, health care services, and transport, which are important aspects of sanitary control. Option C is incorrect as it excludes transportation, an essential area that requires sanitary monitoring. Option D is incorrect as it does not cover health care services, which are critical for ensuring public health and safety.
Question 5 of 5
Which bacteria are most commonly associated with foodborne illnesses?
Correct Answer: D
Rationale: The correct answer is D because all three bacteria (Salmonella enterica, Escherichia coli, Vibrio cholerae) are commonly associated with foodborne illnesses. Salmonella causes gastroenteritis, E. coli can lead to severe food poisoning, and Vibrio cholerae causes cholera. Therefore, choosing "All of the above" encompasses the most common bacteria linked to foodborne illnesses. Choices A, B, and C are incorrect as they do not cover the full range of bacteria typically involved in foodborne illnesses.