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61 Cards in this Set
- Front
- Back
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Which of the following characterics apply to the Enterobacteriaceae family?
a. glucose fermentation b. lack of oxidase c. Nitrate reduction d. A and C are correct e. A, B, and C are correct |
e. A, B and C are correct
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Fever, Lucopenia, disseminated intravascular coagulation, and shock caused by infection with the Enterobacteriaceae are most strongly associated with which of the following?
a. Flagella b. LPS c. Exotoxin d. Capsule e. pili |
b. LPS
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In carriers of Salmonella typhi, the organisms are most likely to reside in which of the following sites?
a. liver b. gallbladder c. lungs d. kidneys e. spleen |
b. gallbladder
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One day after a picnic featuring potato salad and chicken, 10 of the attendees develeloped diarrhea. 2 of them became sick enough to be hopitized.A motile gram-neg. rod that was negative for lactose fermentation but positive for H2S production was isolated from stool samples of both patients. which is most likely to be cause of diarrhea?
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b. Salmonella ser. Typhimurium
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Infection with which of the following organisms is most likely to lead to a condition simulating acute appendicitis?
a. Klebsiella pneumoniae b. Yersinia Pestis c. Salmonella typhi d. Brucella melitensis e. Yersinia enterocolitica |
e. Yersinia enterocolitica
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Which of the following represents the main reservoir for E. coli 0157:H7?
a. cattle b. rodents c. poultry d. pigs e. sheep |
a. cattle
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An organism identified as K pneumoniae is ampicillin sensitive. You should:
a. report the identity and suscepibility result. b. check isolate for purity and repeat all tests c. investigate the a typical anibiogram pattern d. report the identity and repeat the suscepibility test |
c. investigate the atypical antibiogram pattern
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The development of kidney stones in patients with urinary tract infection is caused by proteu species is strongly associated with which of the following factors?
a. phenylalanine deaminase b. swarming motility c. histamine d. urease e. acid |
d. urease
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The biochemical and serological characteristics of which of the following organisms most closely resemble Salmonella?
a. hafnia b. citrobacter c. ewingella d. moellerella e. cedecea |
b. citrobacter
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A ruptured appendix can predispose an individual to an anaerobic infection. Select all possible explanations that support this statement.
a. release of normal gastrointestinal flora b. loss of blood flow to the tissue c. tissue necrosis d. reduced oxygen present due to metabolism by aerobic organisms |
A,B,C,D
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An organism displays the follwowing growth pattern: ambient room air-no growth,
Microaerophilic atms - no growth Anaerobic enviroment - growth This organism probably possessed the following enzyme |
Neither SOD nor catalase/peroxidase
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A purulent aspirate obtained from the jaw is received in the lab. The physician suspects acinomycosis. What clue(s) should the microbiologist look for when processing the specimen for culture?
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Sulfur Granules
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A physician suspect anaerobic pnemonia in a 57 year old male. He has a history of alcoholism and frequent blackouts and vomiting spells. She call the lab to discuss how to collect sputum for anaerobic culture. Which of the following specimens would be acceptable for anaerobic culture?
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Transtracheal aspirate
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Porphyromonas spp. will not grow on laked kanamycin vancomcin (LKV) agar because it:
a. is gram positive rod b. requires Vitamin K and hemin c. is sensative to kanamycin d. is sensative to vancomycin |
d. is sensative to vancomycin
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Oxygen has accidentally entered the labs anaerobic chamber. which component of the chamber will transform it into water in the presence of hydrogen from the anaerobic atmosphere?
a. methylene blue indicator b. palladium chloride catalyst c. dessicant d. charcoal filter |
b. palladium chloride catalyst
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A microbiologist observes large box car shaped gram positive rods in the direct gram stain of purulent material from an abdominal abcess after surgury for bowel obstruction. To hasten the id of this organism, which medium should be added at processing?
a. anaerobic.. Thioglycolate broth b. BBE c. LKV d. EYA |
d. EYA
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A key identification characteristic of Clostridium perfringens is its:
a. double beta hemolysis b. production of central spores c. positive lipase reaction d. ability to produce beta lactamase |
a. double beta hemolysis
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The pathogenicity of Clostridium tetani and C. botulinum is due to their ability to
a. produce neurotoxin b. produce spores c. resist the stomatch acids d. resist antitoxin |
a. produce neurotoxin
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Which of the following Clostridium spp. can be normal enteric flora but is not considered pathogenic and it produces toxin?
a. C. tetani b. C. difficile c. C. septicum d. C. botulinum |
b. C. difficile
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Which of the anaerobic non spore forming gram positive rods is considered the "anaerobic diphteroids'?
a. actinomyces species b. Biofidobacterium species c. Eubacterium species d. Propionibacterium species |
d. propionibacterium species
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The Bacteriodes fragili group can easily be differentiated from Fusobacterium necrophorum by its:
a. ability to grow in bile b. level of oxygen tolerence c.pigmentation d. ability to produce beta lactamase |
a. ability to grow in bile
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A key characteristic that will easily differentiate Prevotella spp. and Prophyromonas spp is:
a. pigmentation b. fluorescence c. ability to grow on LKV d. gram stain |
c. ability to grow on LKV
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which anaerobic gram positive cocci are easily differentiated from the others with the use of an SPS disk?
a. Finegoldia magna b. Peptoniphilus asaccharolyticus c. microaerophlic streptococcus d. peptostreptococcus anaerobius |
d. peptostreptococcus anaerobius
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The fluorescence of Veillonella species can resemble that of :
a. prevotella malaninogenic b. fusobacerium nucleaturn c. clostridium difficile d. porphyromonas gingivalis |
a. Prevotella melaninogenica
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The treatment of most anaerobic infections requires:
a. no intervention b. antibiotics and tissue debridement c. susceptibility tests d. use of a hyperbaric chamber |
b. antiobiotics and tissue debridement
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Mycobacterium leprae
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Hansens bacillus
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Mycobacterium scrofulaceium
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cervical lymphadenitis
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Mycobacterium gordonae
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tap water bacillus
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Mycobacterium avium
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AIDS associated
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Sulfur granules are seen in tissue and drainage from patients infected with:
a. Bifodobacterium b. Bacteriodes c. Clostridium d. Actinomyces |
d. Actinomyces
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Identify the food product that is implicated in the transmission of infant botulism:
a. bottled water b. cereal c. honey d. soy formula |
c. honey
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The anaerobic gram positive bacillius characterized by a double zone of hemolysis on a reduced blood agar plate is:
a. Peptostreptococcus species b. Clostridium perfringens c. Propionibacterium acnes d. Clostridium botulinum |
b. Clostridium perfringens
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The etiologic agent of antibiotic associated pseudomembranous colitis is
a. Clostridium perfringens b. Helicobacter pylori c. Clostridium difficile d. Yersinia enterocolitica |
c. Clostridium difficile
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The botulism toxin induces paraylysis in the body by
a. Inhibiting protein synthesis in the synapse b. causing gastroenteritis c. degrading the cell membrane of neurons d. preventing the release of acetylcholine at the synapse |
d. preventing the release of acetylcholine at the synapse
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Gas gangrene is caused by:
a. Clostridium perfringens b. Clostridium tetani c. Clostridium botulinum d. Clostridium difficile |
a. Clostridium perfringens
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This pathogen causes sustained muscle contraction:
a. Clostridium botulinum b. Clostridium tetani c. Bacillus anthracis d. Peptostretococcus anaerobius |
b.Bacillus anthracis
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The anaerobe that is inhibited by sodium polyanethole sulfonate is:
a. Peptostreptococcus magnus b. Peptostreptococcus prevotii c. Peptostreptococcus anaerobius d. Veillonella parvule |
c. Peptostreptococcus anaerobius
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All of the following characteristics describe the genus Mycobacterium except
a. Acid Fast b. Obligate anaerobe c. slow replication time d. high cell wall |
b. Obligate anaerobe
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The most important reason for using combination drub therapy in the treatment of tuberculosis
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b. to reduce the risk of spontanious mutations
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Mycobacterium marinum is an example of
a. Runyoun Group I b. Runyoun Group II c. Runyoun Group III d. Runyoun Group IV |
a. Runyon Group I
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The nontuberculosis Mycobacteria associated with cervical lymphadenitis in children in:
a. Mycobacterium marinum b. Mycobacterium szulgai c. Mycobacterium leprae d. Mycobacterium scrofulceum |
d. Mycobacterium scrofulceum
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A digested sputum specimen from a patient with AIDS grew-rough, buff colored colonies on selective 7H11 agar. The technologist should suspect:
a. Mycobacterium tuberculosis b. Mycobacterium avium-intracellulare c. Mycobacterium kansasii |
b. Mycobacterium avium-intracellulare
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The patient has a positive PPD (Mantoux) test, but six cultures for Mycobacteria are negative after 8 weeks of incubation. Your conclusion would be:
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a. The PPD should be repeated to check the culture result.
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Many specimens obtained for Mycobacteria studies are contaminated with normal flora and other microorganisms. To successfully recover the Mycobacteria the sample must be
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c. Decontaminated with 2% sodium hydroxide
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A Mycobacteria species that exhibits yellow pigmentation when grown in the dark is called
a. photochromogen b. nonchromogen c. rapid grower d. scotochromogen |
d. scotochromogen
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Media for the isolation of mycrobacteria should contain
a. blood b. whole egg c. chopped meat d. maltose |
b, whole egg
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Masses of granular tissue that grow together and result in mutilation and distortion are observed in this form of leprosy:
a. turberculoid b. chancroid c. lepromatous d. tertiary |
c. lepromatous
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In research laboratories armadillos are untilized for cultivating
a. Mycobacterium leprae b. Mycobacterium tuberculosis c. Mycobacterium kansasii d. Mycobacterium szulgai |
a. Mycobacterium leprae
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According to the CDC recommended guidelines, a sputum smear that demonstrates an average of 3 acid fast bacilli per 100 oil immersion fields should be reported as:
a. +/- b. 1+ c. 2+ d. 3+ e. 4+ |
a. +/-
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Acid fast bacillus
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resists decolorization with acid alcohol
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Bacille Calmert Guerin
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Live attenuated M Bovis
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Ghon Complex
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Granuloma
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Tuberculin
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Extract of killed turberculosis bacilli
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Photochromogen
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Pigment production in light
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Scotochromogen
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Pigment production in light or dark
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Nonphotochromogen
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No pigment produciton in the light
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Rapid grower
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Growth in 3 - 5 days
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Mantoux text
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Intradermal injection of PPD
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Sodium Hydroxide
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Decontamination agent
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Kinyoun Method
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Mucolytic Agent
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N acetyl L cysteine
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Mucolytic agent
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