MLT 205 U3 review Exam Questions and
Answers with Verified Solutions | Latest
Updated 2026
What is the main disadvantage of Broad spectrum antibiotics can destroy
using a broad spectrum antibiotic normal
and how can this affect the flora which may result in a superinfection.
patient?
What are four types of antibiotics Erythromycin, Vancomycin,
that can be used for most GPR cephalosporins, and
and penicillins
Staph?
What are two advantages of Better able to withstand beta-lactamase
cephalosporins when compared to and more
penicillins? modifiable.
What is an example of a topical Bacitracin
antibacterial agent for skin and
mucous membranes that alter
bacterial cell membranes?
What is spectinomycin? A protein synthesis inhibitor used to treat
gonorrhoeae
What are two ways that acquired Chromosomal mutations or from plasmids
resistance to antibiotics can
develop?
, Using the Kirby Bauer method, the Decrease
zone of inhibition is inversely
proportional to the MIC of an
antibiotic. As the MIC increases,
the
zone size will ______.
What is the most important Density of the inoculum
variable
in controlling reproducibility of
Kirby
Bauer (disc diffusion) results?
When are bacteriocidal antibiotics When the patient is immunocompromised
usually used?
What are 5 types of antibiotics that Penicillins, cephalosporins, monobactams,
contain a beta-lactam ring? carbepenems, and glycopeptides
What is the reagent for the rapid Nitrocefin or Cefinase, red = positive
beta-lactamase test and what
color
does it turn when it is positive?
What is the mode of action for Inhibits cell wall synthesis by inhibiting the
Penicillin? formation of peptidoglycan cross-linkages
What are PRPs? Penicillins with various side chains to
convey
resistance to beta-lactamase. Ex: Oxacillin
and
Methicillin
Answers with Verified Solutions | Latest
Updated 2026
What is the main disadvantage of Broad spectrum antibiotics can destroy
using a broad spectrum antibiotic normal
and how can this affect the flora which may result in a superinfection.
patient?
What are four types of antibiotics Erythromycin, Vancomycin,
that can be used for most GPR cephalosporins, and
and penicillins
Staph?
What are two advantages of Better able to withstand beta-lactamase
cephalosporins when compared to and more
penicillins? modifiable.
What is an example of a topical Bacitracin
antibacterial agent for skin and
mucous membranes that alter
bacterial cell membranes?
What is spectinomycin? A protein synthesis inhibitor used to treat
gonorrhoeae
What are two ways that acquired Chromosomal mutations or from plasmids
resistance to antibiotics can
develop?
, Using the Kirby Bauer method, the Decrease
zone of inhibition is inversely
proportional to the MIC of an
antibiotic. As the MIC increases,
the
zone size will ______.
What is the most important Density of the inoculum
variable
in controlling reproducibility of
Kirby
Bauer (disc diffusion) results?
When are bacteriocidal antibiotics When the patient is immunocompromised
usually used?
What are 5 types of antibiotics that Penicillins, cephalosporins, monobactams,
contain a beta-lactam ring? carbepenems, and glycopeptides
What is the reagent for the rapid Nitrocefin or Cefinase, red = positive
beta-lactamase test and what
color
does it turn when it is positive?
What is the mode of action for Inhibits cell wall synthesis by inhibiting the
Penicillin? formation of peptidoglycan cross-linkages
What are PRPs? Penicillins with various side chains to
convey
resistance to beta-lactamase. Ex: Oxacillin
and
Methicillin
