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P1: Biology- Infection and Response
RP- Effects of different antibiotics on bacterial growth
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Created by
Emily Worth
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Cards (4)
Sample Method:
1.Inoculate
a
Petri
dish
with a
culture
of
bacteria
2.Soak
small
discs
of
filter
paper
in
different
antibiotics
3.Using
forceps place
the
antibiotic discs
on the
surface
of the
agar
4.Incubate
the
sealed dish upside down
at
25 degrees Celsius
for
several days
Variables:
Independent:
Type
of
antibiotic
Dependent:
Area
around
each
disc
which is
clear
of
bacteria
Control:
Concentration
of
antibiotic
used,
length
of time
discs
are
soaked
Considerations, Mistakes and Errors:
Can
vary
the
concentration
of
antibiotic
in order to find the
best
to
use
Hazards and Risks:
Take care
to use
aseptic techniques
