Textbook of Diagnostic Microbiology
(Mahon) with questions and updated
answers flashcards
Obligate anaerobe - ANSWER A bacterium that grows only on plates incubated in
the absence of oxygen would be categorized as a(n):
Adherence to surfaces - ANSWER Fimbriae present on the outer surface of bacteria
are used for:
It follows glycolysis and produces reduced nicotinamide adenine dinucleotide
(NADH) - ANSWER All of the following are characteristic of fermentation except:
Candida albicans - ANSWER Of the following, which would most likely cause an
opportunistic infection in the genitourinary tract of a woman of childbearing age?
The systematic collection and analysis of data - ANSWER Surveillance is defined as:
Staphylococcus aureus, Pseudomonas aeruginosa, MRSA, Escherichia coli -
ANSWER Microbes commonly encountered in health care-associated infections in
hospitals include:
Assist in an outbreak investigation - ANSWER Pulsed-field gel electrophoresis
(PFGE) might be performed to:
The percentage of infections in surgical sites or procedures - ANSWER The
occurrence of surgical site infections is generally calculated as:
Bacillus anthracis, Yersinia pestis, Francisella tularensis - ANSWER Microbial
pathogens of potential bioterrorism activity include:
Spectrum of activity, rate of action, mechanism of action - ANSWER Which of the
following characteristics should be considered when selecting an antimicrobial
agent?
HEPA filters - ANSWER What type of filter does a class II BSC use to filter out
infectious agents?
Rejecting suboptimal specimens - ANSWER Which one of the following involves
specimen management in the preanalytic process?
SPS - ANSWER Which of the following anticoagulants is appropriate for use in
microbiology?
Urogenital swab - ANSWER Which of the following specimens should not be
refrigerated?
, Cerebrospinal fluid - ANSWER Which of the following specimens requires immediate
processing when received in the microbiology laboratory?
-The specimen is preserved in formalin.
-Information on the requisition does not match information on the specimen label.
-A second stool sample is submitted from the same patient on the same day -
ANSWER Which of the following are reasons to reject a specimen for culture?
Tapeworm proglottids - ANSWER Which one of the following is noted from a
macroscopic observation?
Throat swab - ANSWER In which of the following specimens is a direct microscopic
examination not useful?
Differential media - ANSWER Chocolate agar is an example of which of the
following?
MacConkey agar - ANSWER Which of the following is an example of a selective and
differential medium?
Urine - ANSWER Which of the following specimens is cultured using a quantitative
isolation technique?
Acid-fast - ANSWER Which of the following stains is best used to detect
mycobacterial organisms in clinical samples?
Chitin - ANSWER Calcofluor white is a colorless dye that binds with which of the
following structures?
Nonviscous fluids - ANSWER Cytocentrifugation is an excellent method for which of
the following types of samples?
Blue - ANSWER In a Wright-Giemsa-stained smear, bacteria would appear as which
of the following colors?
Candida albicans - ANSWER A moderate growth of a heaped, dry-appearing, white
colony is isolated from a patient with thrush. The colony has tiny projections
extending out along the edge of its margin. A presumptive identification of this
organism would be:
Streptococcus agalactiae (group B) - ANSWER A vaginal culture from a 25-year-old
pregnant woman produced colonies on SBA and CHOC agar, but there was no
growth on MAC agar. The colonies are described as medium size with small, diffuse
zones of β-hemolysis. This type of hemolysis is noticed when a colony is removed
with a loop. A suspected identification of this organism would be:
A yeast - ANSWER Medium, raised, off-white colonies with filamentous projections
are seen on SBA and CHOC agar. The organism is likely:
(Mahon) with questions and updated
answers flashcards
Obligate anaerobe - ANSWER A bacterium that grows only on plates incubated in
the absence of oxygen would be categorized as a(n):
Adherence to surfaces - ANSWER Fimbriae present on the outer surface of bacteria
are used for:
It follows glycolysis and produces reduced nicotinamide adenine dinucleotide
(NADH) - ANSWER All of the following are characteristic of fermentation except:
Candida albicans - ANSWER Of the following, which would most likely cause an
opportunistic infection in the genitourinary tract of a woman of childbearing age?
The systematic collection and analysis of data - ANSWER Surveillance is defined as:
Staphylococcus aureus, Pseudomonas aeruginosa, MRSA, Escherichia coli -
ANSWER Microbes commonly encountered in health care-associated infections in
hospitals include:
Assist in an outbreak investigation - ANSWER Pulsed-field gel electrophoresis
(PFGE) might be performed to:
The percentage of infections in surgical sites or procedures - ANSWER The
occurrence of surgical site infections is generally calculated as:
Bacillus anthracis, Yersinia pestis, Francisella tularensis - ANSWER Microbial
pathogens of potential bioterrorism activity include:
Spectrum of activity, rate of action, mechanism of action - ANSWER Which of the
following characteristics should be considered when selecting an antimicrobial
agent?
HEPA filters - ANSWER What type of filter does a class II BSC use to filter out
infectious agents?
Rejecting suboptimal specimens - ANSWER Which one of the following involves
specimen management in the preanalytic process?
SPS - ANSWER Which of the following anticoagulants is appropriate for use in
microbiology?
Urogenital swab - ANSWER Which of the following specimens should not be
refrigerated?
, Cerebrospinal fluid - ANSWER Which of the following specimens requires immediate
processing when received in the microbiology laboratory?
-The specimen is preserved in formalin.
-Information on the requisition does not match information on the specimen label.
-A second stool sample is submitted from the same patient on the same day -
ANSWER Which of the following are reasons to reject a specimen for culture?
Tapeworm proglottids - ANSWER Which one of the following is noted from a
macroscopic observation?
Throat swab - ANSWER In which of the following specimens is a direct microscopic
examination not useful?
Differential media - ANSWER Chocolate agar is an example of which of the
following?
MacConkey agar - ANSWER Which of the following is an example of a selective and
differential medium?
Urine - ANSWER Which of the following specimens is cultured using a quantitative
isolation technique?
Acid-fast - ANSWER Which of the following stains is best used to detect
mycobacterial organisms in clinical samples?
Chitin - ANSWER Calcofluor white is a colorless dye that binds with which of the
following structures?
Nonviscous fluids - ANSWER Cytocentrifugation is an excellent method for which of
the following types of samples?
Blue - ANSWER In a Wright-Giemsa-stained smear, bacteria would appear as which
of the following colors?
Candida albicans - ANSWER A moderate growth of a heaped, dry-appearing, white
colony is isolated from a patient with thrush. The colony has tiny projections
extending out along the edge of its margin. A presumptive identification of this
organism would be:
Streptococcus agalactiae (group B) - ANSWER A vaginal culture from a 25-year-old
pregnant woman produced colonies on SBA and CHOC agar, but there was no
growth on MAC agar. The colonies are described as medium size with small, diffuse
zones of β-hemolysis. This type of hemolysis is noticed when a colony is removed
with a loop. A suspected identification of this organism would be:
A yeast - ANSWER Medium, raised, off-white colonies with filamentous projections
are seen on SBA and CHOC agar. The organism is likely:
