This document provides an overview of different types of microorganisms including bacteria, viruses, fungi, yeast, algae, protozoa. It discusses how some microorganisms can cause diseases like athlete's foot, tuberculosis, and chickenpox, but others can be useful in food production, cleaning waste, and creating antibiotics. It also profiles Alexander Fleming, the scientist who discovered the first antibiotic, penicillin, in 1928 and received the Nobel Prize for his work.

1. Microorganisms
Francisco Milan- Alberto Pérez- Adrián Rosa-

2. Index
Pag 1 . Introduction
Pag 2: What are microorganims?
Pag 3: Bacteria I
Pag 4: Bacteria II
Pag 5: Viruses
Pag 6: Fungi
Pag 7: Yeast
Pag 8:Algae
Pag 9: Protozoa
Pag 10:Diseases caused by microorganisms I
Pag 11:Diseases caused by microorganisms II
Pag 12:Useful microorganisms
Pag 13:Antibiotics
Pag 14:Quick Notes: Alexander Fleming
Pag 15: And for the end...

3. Introducction
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We are sourranded
by microorganims.
They are small and
we don't give they
attention but
microorganims are a
big part of our world.
They are in our body,
food, in the air,
water...

4. What is a microorganim?
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A microorganim is a
very small organism.
We can see it using a
microscope.

5. Bacteria I
Are single-celled spherical, spiral
or rod-shaped organism. This
organism in Monera
Kingdom.Their cells hasn't got
nucleus and most of its has got
cellular wall. Some bacteria can
move on water using flagella (a
long tail). Are bacteria
dangerous? : Most of bacteria
aren't dangerous but some can
cause diseases like pneumonia,
tetanus, and typhoid fever. These
types of bacteria are call
pathogens. Fortunately, we have
antibiotics that fight with bacteria

6. Bacterias II
Bacteria in the soil: Some bacteria
work in the soil like decomposer that
brake material in the ground from
dead animals and plants.
Bacteria in our food: Yes, there are
bacterias in most of our food. But they
aren't bad. Some bacteria help to
make products like yogurts, cheese...
Bacteria in our body: our body has a
lot of bacteria. A lot of it are very good
for us like bacteria in our digestive
system, and bacteria in our skin.
These bacteria protect our body from
other pathogens bacteria.

7. Viruses
Are parasites, they can
only survive inside the
cells of others living
beens.
They can causes a lot of
illnesses. The virus are
the smallest
microorganism that
exist.

8. Fungi
Can be different sizes ranging
from microscopic single cell
(yeast), to macroscopic fungi
that contain many cells (moulds,
mushrooms...).
Yeast:yeast are fungi that the
human use to increase the size
of the flour.
Such as the bread and cakes.

9. Yeast
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Yeast compous with
various small, singlecelled fungi of the
phylum Ascomycota that
reproduce by fission or
budding, the daughter
cells often remaining
attached, and that are
capable of fermenting
carbohydrates into
alcohol and carbon
dioxide

10. Algae
Can be multi or singlecelled. They have many
different forms and
sizes.
Their cells are simillar to
plants cells.

11. Protozoa
Are single-celled
organism witch can
cause diseases. Such
us malaria and sleeping
sickness. They can also
be useful, for example
in the treatment of
sewage where they eat
harmful bacteria.

12. Diseases caused by
microorganisms I
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The most common
diseases caused by
microorganisms are:
-Athlete’s foot. This
ilness is caused by
fungi.
Some
symptoms are: red
skin,
itching
and
blisters

13. Diseases caused by
microorganisms II
-Tuberculosis. This
disease is caused by
bacterias that attack
principally the lungs.
-Chickenpox.
This
ilness is caused by
viruses.The
main
symptom
is
the
appearance of grains

14. Useful microorganism
The most useful microorganism are:
Yeast: that we use in some
food.
Some good bacteria: like
bacteria in yoghurt.
Unicellular fungi that we use to
elaborate antibiotics or others
medicines.
We use some protozoa to
clean residual water and use it
again.

15. Antibiotics
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Antibiotics are substances that
kill prokaryotic cells or prevent
their growth.
As bacteria cells are
prokariotyc, antibiotics are
effective
The bad use of antibiotics can
result in a resistant bacteria.
They are made up of fungi.
They don't work against viruses.
The first antibiotic, the penicillin,
was discovered by Alexander
Fleming in 1928

16. Quick Notes: Alexander Fleming
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He was born in Great Bretain
on August 6, 1881 and died
in London on March 11, 1955
He studied bacteriology and
immunology
He is remembered for the
discovery of penicillin
He recibed the Nobel Prize of
Physiology and Medicine in
1945

17. And for the end...
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Microorganims are
necesary for our live,
and many of it help us
to a best lifestyle.
Also there are bad
microorganims, and
we have to be
carfuly...