WGU Clinical Microbiology Exam 3 Exam 2025–2026
Accurate Real Exam Questions and Verified Correct
Answers JUST RELEASED
What is the most likely identification?
-h. Ducreyi
-h. Influenzae
-h. Aphrophilus
-h. Parainfluenzae - answer>>>h. Influenzae
Which haemophilus spp. Is difficult to isolate and recover from genital ulcers and swollen lymph nodes?
-h. Parahaemolyticus
-h ducreyi
-h haemolyticus
-h. Aphrophilus - answer>>>h. Ducreyi
The most specific an exclusive taxon used in the classification of microrganisms is:
-order
-species
-family
-genus - answer>>>species
Haemophilus spp that require the v factor are easily recovered on which primary agar plate?
-ca agar
-blood agar made with sheep red cells
-xylose agar
-blood agar made with horse red cells - answer>>>ca agar
,List the ingredients in modified thayer martin agar and how they are used to enhance the growth of
n.gonorrhoeae. - answer>>>colistin, nystatin, vacomycin and trimethoprim
A synovial fluid was submitted during the night shift at about 2 am for culutre wth suspection of
neisseria. It was busy and the specimen was placed in the fridge. Around 6 am when the day shift came
in, the techs noticed the specimen in the refrigerator. Should the tech proceed with the culture why or
why not? How should the tech proceed? - answer>>>
Explain the prinicple of the dnase test used to id m. Catarrhalis - answer>>>dnase test is positive for m.
Catarrhalis which helps to differentiate from other gram neg diplococci
In suspected cases of brucellosis, the optimal specimen to be collected for the isolation of the etiologic
agent is
-blood
-nasopharyngeal exudate
-csf
-urine - answer>>>blood
Which microorgansim will grow only on culture media supplemented with cysteine or cystine?
-actinobacillus lignieresii
-francisella tularensis
-kingella kingae
-bartonella bacilliformis - answer>>>francisella tularensis
The etiologic agent of whopping cough is
-bordetella pertussis
-haemophilus ducreyi
-brucella suis
-francisella tularensis - answer>>>bordetella pertussis
, Legionella pneumphila is the etiologic agent of both legionnaires disease and
-pontiac fever
-swine fever
-san joaquin valley fever
-rift valley fever - answer>>>pontiac fever
Which of the following is the optimal clinical specimen for the recovery of legionella pneumophilia?
-nasopharyngeal swab
-stool
-blood
-bronchial washings - answer>>>bronchial washings
Which of the following is not an appropriate medium for primary isolation of bordetella pertussis?
-modified skirrows medium
-regan lowe
-bufferen charcoal yeast extract
-bordet gengou - answer>>>modified skirrows medium
Which of the following is not characteristic of eikenella corrodens?
-it is a thin gram neg bacillus
-colonies sometimes pit the surface of the agar
-it is often in pure culture when recovered from infections
-it is found in the mouth and upper respiratory tract of humans - answer>>>it is often in pure culture
when recovered from infections
The optimal specimen for recovery of brodetella pertussis is
Accurate Real Exam Questions and Verified Correct
Answers JUST RELEASED
What is the most likely identification?
-h. Ducreyi
-h. Influenzae
-h. Aphrophilus
-h. Parainfluenzae - answer>>>h. Influenzae
Which haemophilus spp. Is difficult to isolate and recover from genital ulcers and swollen lymph nodes?
-h. Parahaemolyticus
-h ducreyi
-h haemolyticus
-h. Aphrophilus - answer>>>h. Ducreyi
The most specific an exclusive taxon used in the classification of microrganisms is:
-order
-species
-family
-genus - answer>>>species
Haemophilus spp that require the v factor are easily recovered on which primary agar plate?
-ca agar
-blood agar made with sheep red cells
-xylose agar
-blood agar made with horse red cells - answer>>>ca agar
,List the ingredients in modified thayer martin agar and how they are used to enhance the growth of
n.gonorrhoeae. - answer>>>colistin, nystatin, vacomycin and trimethoprim
A synovial fluid was submitted during the night shift at about 2 am for culutre wth suspection of
neisseria. It was busy and the specimen was placed in the fridge. Around 6 am when the day shift came
in, the techs noticed the specimen in the refrigerator. Should the tech proceed with the culture why or
why not? How should the tech proceed? - answer>>>
Explain the prinicple of the dnase test used to id m. Catarrhalis - answer>>>dnase test is positive for m.
Catarrhalis which helps to differentiate from other gram neg diplococci
In suspected cases of brucellosis, the optimal specimen to be collected for the isolation of the etiologic
agent is
-blood
-nasopharyngeal exudate
-csf
-urine - answer>>>blood
Which microorgansim will grow only on culture media supplemented with cysteine or cystine?
-actinobacillus lignieresii
-francisella tularensis
-kingella kingae
-bartonella bacilliformis - answer>>>francisella tularensis
The etiologic agent of whopping cough is
-bordetella pertussis
-haemophilus ducreyi
-brucella suis
-francisella tularensis - answer>>>bordetella pertussis
, Legionella pneumphila is the etiologic agent of both legionnaires disease and
-pontiac fever
-swine fever
-san joaquin valley fever
-rift valley fever - answer>>>pontiac fever
Which of the following is the optimal clinical specimen for the recovery of legionella pneumophilia?
-nasopharyngeal swab
-stool
-blood
-bronchial washings - answer>>>bronchial washings
Which of the following is not an appropriate medium for primary isolation of bordetella pertussis?
-modified skirrows medium
-regan lowe
-bufferen charcoal yeast extract
-bordet gengou - answer>>>modified skirrows medium
Which of the following is not characteristic of eikenella corrodens?
-it is a thin gram neg bacillus
-colonies sometimes pit the surface of the agar
-it is often in pure culture when recovered from infections
-it is found in the mouth and upper respiratory tract of humans - answer>>>it is often in pure culture
when recovered from infections
The optimal specimen for recovery of brodetella pertussis is
