BIOD 171
L5: Lab Exam 5
Question 1
pts
The Kirby-Bauer method for examining antibiotic sensitivity is also known as what?
Your Answer:
Standardized Disk Susceptibility Test
The Standardized Disc Susceptibility Test
Question 2
pts
True or False. The antibiotic discs are placed onto the LB agar plate before spreading the
bacterial culture on the plate.
True
Correct!
False
The antibiotic discs are place onto the plate AFTER the culture has been spread.
Question 3
pts
When performing the Kirby-Bauer method the areas of clearing surrounding an antibiotic disc
after an overnight incubation are known as what?
Your Answer:
Zones of Inhibition
Zones of Inhibition
Question 4
pts
Why was an LB agar plate used to test the Staph culture as opposed to a selective/differential
agar that only grows Staph?
Your Answer:
LB agar plates are used because they provide nutritional requirements to encourage bacterial
growth. Results from the Kirby Bauer method are based on bacterial growth. Selective and
differential additives should not be present because they might inhibit growth.
T
L5: Lab Exam 5
Question 1
pts
The Kirby-Bauer method for examining antibiotic sensitivity is also known as what?
Your Answer:
Standardized Disk Susceptibility Test
The Standardized Disc Susceptibility Test
Question 2
pts
True or False. The antibiotic discs are placed onto the LB agar plate before spreading the
bacterial culture on the plate.
True
Correct!
False
The antibiotic discs are place onto the plate AFTER the culture has been spread.
Question 3
pts
When performing the Kirby-Bauer method the areas of clearing surrounding an antibiotic disc
after an overnight incubation are known as what?
Your Answer:
Zones of Inhibition
Zones of Inhibition
Question 4
pts
Why was an LB agar plate used to test the Staph culture as opposed to a selective/differential
agar that only grows Staph?
Your Answer:
LB agar plates are used because they provide nutritional requirements to encourage bacterial
growth. Results from the Kirby Bauer method are based on bacterial growth. Selective and
differential additives should not be present because they might inhibit growth.
T
