Required Practicals Flashcards
1
Q
What is the method for the petri dish practical?
A
- inoculate a petri dish with a culture of bacteria
- soak small disks of filter paper in different antibiotics
- using forceps, place the disks into the agar
- incubate for several days upside down at 25C
2
Q
What is a consideration to be taken during the petri dish practical?
A
To vary the concentration of antibiotic to find the best concentration to use
3
Q
What is the independent variable of the petri dish practical?
A
Type of antibiotic
4
Q
What is the dependent variable of the petri dish practical?
A
the area around each disc that is clear of bacteria
5
Q
What are the control variables of the petri dish practicals?
A
concentration of antibiotic used, length of time the disks are soaked
6
Q
What are the hazards of the practical?
A
need to follow aseptic techniques and ensure that the petri dish is sealed correctly
