MMSC438 FULL QUESTIONS AND CORRECT
ANSWERS ALREADY PASSED STUDY SHEET
●● An antimicrobial susceptibility concentration separating a susceptible
drug concentration from an intermediate is called a (an):
A. Antibiogram.
B. Assurance.
C. Breakpoint.
D. Spectrum.
Answer: C. Breakpoint
●● When testing activity of antimicrobial drug combinations, if two
drugs together produce substantially greater susceptibility than the sum
of the individual effects, it is known as...
A. Antagonism
B. Additive
C. Synergy
D. Indifference
Answer: C. Synergy
,●● In order to determine if an isolate of Streptococcus pneumoniae is
penicillin-resistant, screening can be performing using a(n)______ disc
test.
A. cefoxitin
B. penicillin
C. optochin
D. oxacillin
Answer: D. oxacillin
●● __________ is considered a specimen collection/clerical error and
will generally result in specimen rejection.
A. Missing medical record (ID) number on requisition
B. Inappropriate specimen for culture requested
C. Specimen quantity insufficient
D. Duplicate specimen same day
E. All of the above
Answer: E. All of the above
●● The minimal bactericidal concentration is the concentration of an
antimicrobial agent...
, A. Needed to prevent visually discernible growth.
B. Reducing viable organism growth by 99.9%.
C. Always equal to the MIC.
D. Toxic to the patient.
Answer: B. Reducing viable organism growth by 99.9%.
●● Standard disk diffusion tests on Gram-negative rods, such as E. coli,
utilize which of the following media and culture conditions?
A. Mueller Hinton agar, 35oC, 5% CO2, 16-18 hours
B. Mueller Hinton agar, 35oC, ambient air, 16-18 hours
C. Mueller Hinton agar, 20oC, 5% CO2, 20 hours
D. Mueller Hinton with 5% SBA, 35oC, 5% CO2, 16-18 hours
Answer: B. Mueller Hinton agar, 35oC, ambient air, 16-18 hours
●● An antibiogram:
A. Involves the collection of statistical data for every organism tested at
an institution.
B. Is a profile of bacterial susceptibility and resistance patterns against a
set group of antimicrobials.
C. Monitors resistance patterns at the institution.
D. All of the above
ANSWERS ALREADY PASSED STUDY SHEET
●● An antimicrobial susceptibility concentration separating a susceptible
drug concentration from an intermediate is called a (an):
A. Antibiogram.
B. Assurance.
C. Breakpoint.
D. Spectrum.
Answer: C. Breakpoint
●● When testing activity of antimicrobial drug combinations, if two
drugs together produce substantially greater susceptibility than the sum
of the individual effects, it is known as...
A. Antagonism
B. Additive
C. Synergy
D. Indifference
Answer: C. Synergy
,●● In order to determine if an isolate of Streptococcus pneumoniae is
penicillin-resistant, screening can be performing using a(n)______ disc
test.
A. cefoxitin
B. penicillin
C. optochin
D. oxacillin
Answer: D. oxacillin
●● __________ is considered a specimen collection/clerical error and
will generally result in specimen rejection.
A. Missing medical record (ID) number on requisition
B. Inappropriate specimen for culture requested
C. Specimen quantity insufficient
D. Duplicate specimen same day
E. All of the above
Answer: E. All of the above
●● The minimal bactericidal concentration is the concentration of an
antimicrobial agent...
, A. Needed to prevent visually discernible growth.
B. Reducing viable organism growth by 99.9%.
C. Always equal to the MIC.
D. Toxic to the patient.
Answer: B. Reducing viable organism growth by 99.9%.
●● Standard disk diffusion tests on Gram-negative rods, such as E. coli,
utilize which of the following media and culture conditions?
A. Mueller Hinton agar, 35oC, 5% CO2, 16-18 hours
B. Mueller Hinton agar, 35oC, ambient air, 16-18 hours
C. Mueller Hinton agar, 20oC, 5% CO2, 20 hours
D. Mueller Hinton with 5% SBA, 35oC, 5% CO2, 16-18 hours
Answer: B. Mueller Hinton agar, 35oC, ambient air, 16-18 hours
●● An antibiogram:
A. Involves the collection of statistical data for every organism tested at
an institution.
B. Is a profile of bacterial susceptibility and resistance patterns against a
set group of antimicrobials.
C. Monitors resistance patterns at the institution.
D. All of the above
