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Clinical Microbiology Flashcards | StudBud
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Clinical Microbiology
Clinical Microbiology
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Test your knowledge of Clinical Microbiology
Flashcards
52 cards
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Practice quiz
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Questions
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Answers
1
Which Gram negative rod does not grow on MacConkey?
Pasteurella multocida
Aeromonas hydrophila
Pseudomonas aeruginosa
Escherichia coli
2
Which organism causes Bubonic Plague?
Yersinia pestis
Yersinia enterocolitica
Salmonella typhi
Shigella sonneii
3
An example of a photochromogen is
Mycobacterium fortuitum
Mycobacterium avium
Mycobacterium kansasii
Mycobacterium tuberculosis
4
A blood culture is positive after 5 days. Gram stain: small Gram negative coccobacilli. Growth on BAP after 48 hours
the tech should perform identification and susceptibliity
the tech should perform biochemical identification for HACEK group organism
the tech should consider it contaminated and perform another Gram stain
the tech should take extra safety precautions for possible Brucella
5
Which of the following include anaerobic Gram negative nonsporulating bacilli?
Brucella
Actinomyces
Bacteroides
Pasteurella
6
What color are colonies of Vibrio cholerae on TCBS agar?
green
pink
yellow
clear
7
What stain is used to look for Cryptococcus neoformans?
Gram stain
AFB stain
India ink stain
Modified Acid Fast stain
8
Veillonella sp. Gram stain reaction and morphology is:
Gram negative rod
Gram positive cocci
Gram negative cocci
Gram positive rod
9
Lactobacillus can be beta hemolytic.
False
True
10
Pseudomonas aeruginosa is oxidase
positive
negative
11
A stool pathogen that is H2S+ is
Vibrio cholera
Shigella sonnei
Yersinia enterocolitica
Edwarsiella tarda
12
Which atmosphere do most Neisseria prefer?
Capnophilic
Anaerobic
Faculatative anaerobic
Facultatively aerobic
13
The test that separates Klebsiella oxytoca from Klebsiella pneumoniae is
oxidase
PYR
lactose
indole
14
An example of a Phenylalanine Deaminase positive Enterobacteriaceae is
Providencia rettgeri
Klebsiella oxytoca
Salmonella typhi
Escherichia coli
15
Which anaerobe has a double zone of beta hemolysis on BAP agar?
Bacteroides fragilis
Clostridium perfringens
Fusobacterium nucleatum
Clostridium botulinum
16
The best medium for culture of Mycobacterium tuberculosis is
Bordet-Gengou agar
Loeffler medium
Cystine Blood agar
Lowenstein-Jensen medium
17
Bordetella pertussis is a Gram negative coccobacillus.
True
False
18
Haemophilus influenzae requires which factors for growth?
X only
V only
does not need factors for growth
X and V
19
Yellow colonies on Hektoen agar are considered
Lactose fermenters
non lactose fermenters
20
Escherichia coli is motility negative.
True
False
21
A Gram negative diplococci that grows on MTM agar can be further confirmed as Neisseria gonorrhoeae if it is:
oxidase positive and maltose positive, glucose negative
oxidase positive and glucose positive, maltose negative
oxidase positive, glucose positive and maltose positive
glucose positive, oxidase negative and maltose negative
22
Catalase Negative ,Optichin Positive bacteria
c. S.pneumonia
d. S.agalactiae
b. S.pyogenes
a. Staph aureus
23
An example of an aminoglycoside antibiotic is
Clindamycin
Tobramycin
Ciprofloxacin
Penicillin
24
Mycoplasmas differ from bacteria in that they:
are not serologically antigenic
Do not cause disease in humans
cannot grow in artificial inanimate media
lack cell walls
25
Lactobacillus sp. are
Gram positive rods
Gram negative rods
Gram negative diplococci
Gram positive cocci
26
bacteria which cause syphilis:
d. Yersinia pestis
c. Treponema palladium
b. Viencent angina
a. Neisseria gonorrhea
27
What is the Gram stain reaction and morphology for Bacteroides fragilis?
Gram positive cocci
Gram negative rod
Gram positive rod
Gram negative cocci
28
Gram (+) bacteria are purple
True
False
29
A sputum Gram stain shows >25 WBC and <10 epithelial cells per high power field. Is it acceptable?
yes
no
30
Citrobacter koseri is H2S+
True
False
31
Respiratory syncytial virus is best isolated using:
expectorated sputum
nasopharyngeal aspirate
throat swab
cough plate
32
Listeria monocytogenes is
A Gram positive rod, catalase negative
A Gram positive rod, catalase positive
33
The test that separates Proteus mirabilis and Proteus vulgaris is
catalase
PYR
indole
oxidase
34
Mycobacterium fortuitum is a
rapid grower
non photochromogen
photochromogen
scotochromogen
35
Which organism is reverse CAMP test positive?
Arcanobacterium haemolyticum
Streptococcus agalactiae
Staphylococcus aureus
Streptococcus pyogenes
36
Pinworm is
Giardia lamblia
Trichuria trichuria
Ascaris lumbricoides
Enerobius vermicularis
37
Shigella sonnei is motility negative.
True
False
38
Characteristic identification of Moraxella catarrhalis include:
oxidase negative
beta lactamase negative
carbohydrates negative
Gram negative rod
39
Which is an accurate description of Staphylococcus bacteria?
Possesses gram positive cocci in clusters
Possesses gram negative cocci in clusters
Possesses gram positive cocci in chains
Possesses gram negative cocci in chains
40
Streptococcus pyogenes is PYR positive.
True
False
41
Neisseria gonorrhea
Virus, blindness, G+, PID,Neonatal poisoning
Gonorrhea,Urethritis; PID,Neonatal Ophthalmia,G-,kidney bean
Septicemia, genital infection, G+, Gonorrhea
Meningitis, G-, STI, Urethritis, kidney failur if untreated
42
An HIV positive patient's spinal fluid grew a budding, encapsulated yeast on culture. What could be the identification?
Microsporum gypsum
Cryptococcus neoformans
Aspergillus fumigatus
Sporothrix schenckii
43
What test is used to separate Staphylococcus aureus from Staphylococcus epidermidis?
PYR
Coagulase
Catalase
Optochin
44
Gram (-) bacteria are pink
True
False
45
A Gram positive rod that is H2S+ is
Lactobacillus gasseri
Corynebacterium diptheriae
Arcanobacterium haemolyticum
Erysipelothrix rhusiopathiae
46
Staphylococcus aureus has what Gram stain reaction and morphology and what catalase result
Gram negative rod, catalase pos
Gram positive rod, catalase pos
Gram positive cocci, catalase neg
Gram positive cocci, catalase pos
47
An example of a VP (Voges Proskauer) positive Enterobacteriaceae is
Escherichia coli
Klebsiella pneumoniae
Proteus mirabilis
Morganella morganii
48
A yeast that is Germ tube positive is
Candida albicans
Candia krusei
Candida glabrata
Candida parapsilosis
49
The agar that Legionella pneumophila grows on is
CIN agar
Regan Lowe agar
BCYE agar
TCBS agar
50
What can Streptococcus pyogenes cause?
Necrotizing fasciitis
Scarlet fever
Strep throat
All of the above
51
Proteus vulgaris is:
a "swarmer" and indole positive
Urease negative and indole negative
gram - and indole negative
a "swarmer" and indole negative
52
What test is used to separate Staphylococcus and Streptococcus?
Optochin
Coagulase
Novobiocin
Catalase
