7.2: antimicrobial susceptibility test disk diffusion method

Question 1

Resistant=
Susceptible=

Answer 1

-bacteria grew
-stops bacteria from growing/ “clear zone”

Question 2

In the Antimicrobial Susceptibility Test, if an organism is ____________ to a particular antibiotic you will NOT see a clear zone or zone of inhibition.

Answer 2

-resistant

Question 3

The Kirby-Bauer test is used for:

Answer 3

-Determining the susceptibility of a microbe to an antimicrobial agent.

Question 4

In the Antimicrobial Susceptibility Test, if an organism is ___________________ to a particular antibiotic you will see a clear zone or zone of inhibition.

Answer 4

-susceptible

Question 5

TRUE OR FALSE:
When testing an organism with several different antibiotics, the antibiotic that produces the largest zone is the one that the microorganism is most sensitive to.

Answer 5

-TRUE

Question 6

___________________ are natural antimicrobial agents produced by microorganisms.

Answer 6

-antibiotic

Question 7

In the Disk Diffusion (Kirby-Bauer) Method, the medium used at a pH between 7.2 and 7.4 is the__________________.

Answer 7

-Mueller-Hinton Agar

Question 8

A clear zone around an antimicrobial disk on a plate being used for a Kirby-Bauer test indicates:

Answer 8

-Complete susceptibility of the bacteria to the antimicrobial

Question 9

If a substance is produced in a lab to kill a bacterial infection in a patient, the best term for this substance is

Answer 9

-antimicrobial