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Antibiotics

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14th September, 2012 Antibiotics LO: We will be able to state how an antibiotic works and why it can only work with some illnesses and we will describe how bacteria ... – PowerPoint PPT presentation

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Title: Antibiotics


1
14th September, 2012
Antibiotics LO We will be able to state how an
antibiotic works and why it can only work with
some illnesses and we will describe how bacteria
can become resistant to antibiotics and the
problems this causes. STM Creative Thinkers
2
I would never take antibiotics, I think they are
really bad they should be completely banned
I sometimes take antibiotics, but I quite often
forget to take all of them, but that doesnt
matter, as long as I feel better again
Ill use antibiotics, but only if its really
necessary, and I always make sure I take the full
course.
I think we should use antibiotics for everything,
they are great for making us better, no matter
what is wrong with us
Antibiotics
Concept Cartoon
3

Antibiotics
Antibiotics are substances that kill bacteria or
prevent their growth. They do not work against
viruses.
4
The first antibiotic - penicillin - was
discovered in 1928 by Alexander Fleming.
Antibiotics
Alexander Fleming 1928
5
He noticed that some bacteria he had left in a
petri dish had been killed by naturally occurring
penicillium mould.
Antibiotics
6
Since the discovery of penicillin, many other
antibiotics have been discovered or developed.
Antibiotics
7
Most antibiotics used in medicine have been
altered chemically to make them more effective
and safer for humans.
Antibiotics
8
Bacterial strains can develop resistance to
antibiotics. This happens because of natural
selection. In a large population of bacteria,
there may be some cells that are not affected by
the antibiotic. These cells survive and
reproduce, producing even more bacteria that are
not affected by the antibiotic.
Antibiotics
9
MRSA is methicillin-resistant staphylococcus
aureus. It is very dangerous because it is
resistant to most antibiotics. It is important to
avoid over-use of antibiotics, so we can slow
down, or stop, the development of other strains
of resistant bacteria
Antibiotics
MRSA
10
Antibiotic How it works
Penicillin Breaks down cell walls
Erythromyin Stops protein synthesis
Neomycin Stops protein synthesis
Vancomycin Stops protein synthesis
Ciproflaxin Stops DNA replication
Antibiotics
11
Cloze to the end
Penicillin was the first antibiotic discovered.
It was discovered in 1928 by Alexander
Fleming. Antibiotics kill bacteria or stop them
from growing. Examples of antibiotics are
penicillin, which breaks down cell walls,
vancomycin, neomycin, erythromycin, these stop
protein synthesis and ciproflaxin, which stops
DNA replication.
bacteria ciproflaxin 1928
vancomycin growing
penicillin antibiotic
eythromycin
12
Cloze to the end
Penicillin was the first antibiotic discovered.
It was discovered in 1928 by Alexander
Fleming. Antibiotics kill bacteria or stop them
from growing. Examples of antibiotics are
penicillin, which breaks down cell walls,
vancomycin, neomycin, erythromycin, these stop
protein synthesis and ciproflaxin, which stops
DNA replication.
bacteria ciproflaxin 1928
vancomycin growing
penicillin antibiotic
eythromycin
13
Cloze to the end
Penicillin was the first antibiotic discovered.
It was discovered in 1928 by Alexander
Fleming. Antibiotics kill bacteria or stop them
from growing. Examples of antibiotics are
penicillin, which breaks down cell walls,
vancomycin, neomycin, erythromycin, these stop
protein synthesis and ciproflaxin, which stops
DNA replication.
bacteria ciproflaxin 1928
vancomycin growing
penicillin antibiotic
eythromycin
14
Cloze to the end
Penicillin was the first antibiotic discovered.
It was discovered in 1928 by Alexander
Fleming. Antibiotics kill bacteria or stop them
from growing. Examples of antibiotics are
penicillin, which breaks down cell walls,
vancomycin, neomycin, erythromycin, these stop
protein synthesis and ciproflaxin, which stops
DNA replication.
bacteria ciproflaxin 1928
vancomycin growing
penicillin antibiotic
eythromycin
15
Cloze to the end
Penicillin was the first antibiotic discovered.
It was discovered in 1928 by Alexander
Fleming. Antibiotics kill bacteria or stop them
from growing. Examples of antibiotics are
penicillin, which breaks down cell walls,
vancomycin, neomycin, erythromycin, these stop
protein synthesis and ciproflaxin, which stops
DNA replication.
bacteria ciproflaxin 1928
vancomycin growing
penicillin antibiotic
eythromycin
16
Cloze to the end
Penicillin was the first antibiotic discovered.
It was discovered in 1928 by Alexander
Fleming. Antibiotics kill bacteria or stop them
from growing. Examples of antibiotics are
penicillin, which breaks down cell walls,
vancomycin, neomycin, erythromycin, these stop
protein synthesis and ciproflaxin, which stops
DNA replication.
bacteria ciproflaxin 1928
vancomycin growing
penicillin antibiotic
eythromycin
17
Cloze to the end
Penicillin was the first antibiotic discovered.
It was discovered in 1928 by Alexander
Fleming. Antibiotics kill bacteria or stop them
from growing. Examples of antibiotics are
penicillin, which breaks down cell walls,
vancomycin, neomycin, erythromycin, these stop
protein synthesis and ciproflaxin, which stops
DNA replication.
bacteria ciproflaxin 1928
vancomycin growing
penicillin antibiotic
eythromycin
18
Cloze to the end
Penicillin was the first antibiotic discovered.
It was discovered in 1928 by Alexander
Fleming. Antibiotics kill bacteria or stop them
from growing. Examples of antibiotics are
penicillin, which breaks down cell walls,
vancomycin, neomycin, erythromycin, these stop
protein synthesis and ciproflaxin, which stops
DNA replication.
bacteria ciproflaxin 1928
vancomycin growing
penicillin antibiotic
eythromycin
19
Cloze to the end
Penicillin was the first antibiotic discovered.
It was discovered in 1928 by Alexander
Fleming. Antibiotics kill bacteria or stop them
from growing. Examples of antibiotics are
penicillin, which breaks down cell walls,
vancomycin, neomycin, erythromycin, these stop
protein synthesis and ciproflaxin, which stops
DNA replication.
bacteria ciproflaxin 1928
vancomycin growing
penicillin antibiotic
eythromycin
20
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