Antibiotic Susceptibility Test

The flashcards below were created by user nghiatrinh1991 on FreezingBlue Flashcards.

  1. What is antibiotics?
    Compound that kill the bacteria
  2. What is the disc-diffusion method?
    Check Lab manual
  3. What is zone of inhibition?
    Check lab manual
  4. What is the minimum inhibitory concentration(MIC)?
    It is the least amount of a certain antibiotic that only inhibit the growth of the bacteria but not strong enough to kill the bacteria
  5. What does Bacitracin(A disk) do?
    Inhibits cell wall synthesis
  6. What is the diameter of a zone of inhibition for us to conclude that the bacteria is susceptible to bacitracin?
    Greater than 10 mm
  7. Which type of bacteria is susceptible to Bacitracin? Be Specific
    • Group A Beta-hemolysis Streptococci (GAS)-infection of skin and throats
    • EX: Streptococcus pyogenes is sensitive to bacitracin while Streptococcus agalactiae is resistant
  8. How does Novobiocin affect bacteria?
    Interferes with ATP production
  9. What is Novobiocin's susceptible diameter of the zone of inhibition?
    Greater than 16mm
  10. What does Novobiocin identify?
    • Identify coagulase negative staphylococci
    • EX: Staphylococcus saprophyticus
  11. How does Optochin(O disk) intefere with bacteria growth?
    Interfere with ATP production
  12. What is Optochin's susceptibility diameter of zone of inhibition?
    Greater than 14mm
  13. Which type of bacteria does Optochin differentiate?
    Differentiate Streptococcus pneumoniae from other Alpha hemolytic streptococci
Card Set:
Antibiotic Susceptibility Test
2013-04-09 22:49:45
Antibiotic Susceptibility Test

Antibiotic Susceptibility Test
Show Answers: