What should be done after soaking a filter paper disc in an antibiotic?
Effect of Antibiotics on Bacteria Growth

Flashcard
•
Biology
•
8th Grade
•
Hard
Rosemary Matthews
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7 questions
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1.
FLASHCARD QUESTION
Front
Back
Place the disc on a Petri dish with bacterial culture.
2.
FLASHCARD QUESTION
Front
What temperature and duration are recommended for incubating the Petri dish?
Back
Incubate for 48-72 hours at 25 °C.
3.
FLASHCARD QUESTION
Front
What is measured to compare the antibacterial properties of the chemicals?
Back
Measure the radius/diameter of any clear zones around the discs.
4.
FLASHCARD QUESTION
Front
What conclusion can be drawn if there is no clear zone around a disc soaked in antibiotic?
Back
The bacteria are resistant to that antbiotic.
5.
FLASHCARD QUESTION
Front
Name one factor that should be controlled to ensure a fair test when comparing results.
Back
Using the same type of bacteria.
6.
FLASHCARD QUESTION
Front
What is another factor that needs to be controlled for a valid test?
Back
Using the same antibiotics.
7.
FLASHCARD QUESTION
Front
How would you know which antibiotic is the most effective?
Back
The one with the largest clear zone around it.
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