Transcript Keeping Healthy (B2)

Doctor Doctor
Athletes Foot
A
Verruca/warts
B
Cold sores
C
Swine flu
D
Which of these infections would antibiotics
work on? – WHY?
Prescribe!
Athletes Foot
A
Verruca/warts
B
Cold sores
C
Swine flu
D
NONE of THEM!!
EXT Q: Which of these infections would
antibiotics work on? – WHY?
Antimicrobials
• Lesson Learning Outcomes:
Describe how
antimicrobials
work
Suggest when
it would be
appropriate
to prescribe
antibiotics
Increasing Difficulty
Explain how
bacteria can
become
resistant to
antibiotics
Antimicrobials
• Anti – means ‘against’
• Microbial – refers to micro organisms: fungi,
bacteria and viruses
• Anti-microbial chemicals and drugs used for
infections DO NOT work on all microbes
Antimicrobials…
Left hand page
Describe what an
antimicrobial is
Summary
Right hand page
Antimicrobials
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The Role of Antibiotics
• Watch the video
• THEN write a summary of what you have
learnt
Antibiotic Resistance
Practical
Student One
•
•
•
Collect an agar plate, permanent pen and
ruler
On the base (side with the agar
jelly in) use the pen to split the
plate
into four
Along the edge of each quarter
write the following along with
your initials
•
•
DNT
MJF
Take the marked plate to one of the two stations
with the E-coli bottles and cotton swabs.
AT THE STATION: Using a new swab, as shown,
dip it into the E-coli bottle ONCE and rub swab
over agar jelly from one side to other. Make sure
you have covered the whole plate with E-coli.
Place swab in Haz-bag after use.
Student Two
• Collect and setup a Bunsen burner with a heat
mat
• Light the Bunsen and leave it on the safety
(orange) flame
• Collect a set of tweezers in ethanol
• Collect two green paper towels and four hole
punched discs from beaker.
• Place the discs carefully onto one towel.
• Flame tweezers, as shown, then pick up one disc
and spare paper towel and take to one of the four
stations of antibiotic solutions.
• AT THE STATION: Holding the disc in the tweezers
dip it into the antibiotic solution ONCE and shake
off excess solution onto paper towel.
•Return to your Bunsen burner your partner should
have returned with the agar plate.
• Place the disc carefully, as shown, into the centre
of the correct quarter that matches the dipped
solution.
• Repeat from flaming step for other three quarters
and seal plate lid with two pieces of sellotape, as
shown.
Antibiotics
• MRSA is a
superbug –
what is a
superbug?
Summary Time
• Summarise HOW you carried out the
experiment and sketch what you expect the
plates to look like when we get them back
next lesson!