Page |1
NSC 830: Antibiotics Questions and
Correct Answers/ Latest Update / Already
Graded
Why does a gram positive stain show up purple
Ans: There is a thick peptidoglycogen layer that takes up
crystal violet stain
why does gram negative stain pink/red?
Ans: takes up counterstain to appear that color
how many layers does a gram negative bacteria have?
Ans: 3- thin peptidoglycogen layer sandwiched between an
inner and outer cell membrane
What color does atypical bacteria stain?
Ans: no color
Why doesn't atypical bacteria have a color stain?
Ans: there is no peptidoglycogen layer
All rights reserved © 2025/ 2026 |
, Page |2
Minimum inhibitory concentration (MIC)
Ans: the smallest concentration of drug that visibly inhibi ts
growth
antibiotics that inhibits cell wall synthesis
Ans: penicillin
cephalosporins
vancomycin
fosfomycin
antibiotic that inhibit bacterial protein synthesis
Ans: tetracylines
macrolides
lincosamide
mupiricin
oxazolididone
aminoglycoside
MISC method of action antibiotic
Ans: fluoroquinolones - DNA
metronidazole
All rights reserved © 2025/ 2026 |
NSC 830: Antibiotics Questions and
Correct Answers/ Latest Update / Already
Graded
Why does a gram positive stain show up purple
Ans: There is a thick peptidoglycogen layer that takes up
crystal violet stain
why does gram negative stain pink/red?
Ans: takes up counterstain to appear that color
how many layers does a gram negative bacteria have?
Ans: 3- thin peptidoglycogen layer sandwiched between an
inner and outer cell membrane
What color does atypical bacteria stain?
Ans: no color
Why doesn't atypical bacteria have a color stain?
Ans: there is no peptidoglycogen layer
All rights reserved © 2025/ 2026 |
, Page |2
Minimum inhibitory concentration (MIC)
Ans: the smallest concentration of drug that visibly inhibi ts
growth
antibiotics that inhibits cell wall synthesis
Ans: penicillin
cephalosporins
vancomycin
fosfomycin
antibiotic that inhibit bacterial protein synthesis
Ans: tetracylines
macrolides
lincosamide
mupiricin
oxazolididone
aminoglycoside
MISC method of action antibiotic
Ans: fluoroquinolones - DNA
metronidazole
All rights reserved © 2025/ 2026 |
