Transcript Wonderful World of Bacteria

Wonderful World of
Bacteria
The Cell
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The cell is a unit of organization
Cells are classified as prokaryotes or
eukaryotes
Living things are classified in six kingdoms
based on structure.
Prokaryotes
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Within prokaryotes, there are two groups:
Bacteria and Archaea.
Meanings
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Prokaryotes
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Pro = Before
Karyote = Cell Nucleus
Do Not Have a Nucleus
Eukaryotes
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Eu = True
Karyote = Cell Nucleus
Has a Nucleus
Which is older
Prokaryotes or
Eukaryotes?
Prokaryotes
Examples
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Example of Prokaryote
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Bacteria
Example of Eukaryote
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Animals, Plants, Fungi
Kingdom Bacteria
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Classified by how they get food.
Consumers obtain nutrients from other
organisms.
Bacteria
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Most consumers are decomposers which
feed on dead organic matter.
Parasitic is another consumer which means
they invade the body of another organism to
obtain food.
Bacteria who make their own food are
producers.
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Some are photosynthetic and chlorophyll is
needed for photosynthesis.
BACTERIA are helpful because…
They are in our
foods…
Bacteria Movement
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What is a that tail-like
structure?
Its called a flagellum
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A Flagellum is a whip
like structure that
propels bacteria
forward.
Flagellum means whip
in Latin
More bacteria in our food…
Medicines
Antibiotic
Bacteria
Infection
Penicillin
Penicillium
chrysogenum
Throat infections,
laryngitis, bronchitis,
pneumonia, stomach
problems,
Bacitracin
Bacillus subtilis
Prevent skin infections
Neomycin
Streptomyces fradiae
Infection of outer ear
Cipro
Infection of lungs, skin,
bones, joints, UTIs,
diarrhea
Pseudomona and Penicillium
and the help during oil spill clean-up
Good For World
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Nitrogen-fixing bacteria consume nitrogen
in the air and change it into a form that plants
can use.
Decomposing bacteria break down dead
organic matter and make nutrients available
again to living things.
Bioremediation is the use of bacteria and
other microorganisms to change pollutants
into harmless chemicals.
Good For People
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Some bacteria cause diseases while others
make chemicals to treat diseases.
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Antibiotics are medicines used to kill bacteria and
other microorganisms.
Bacteria can also be bred for food!
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Cheese
Yogurt
Buttermilk
Sour cream
ARCHAEBACTERA
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Bacteria that live in
extreme conditions
The four main types
of Archaebacteria:
cold lovers, salt
lovers, heat lovers,
methane makers
Deep Sea Vents
Cold Lovers
Hot Springs
Heat Lovers
Salty Environments
Salt Lovers
Sewage Plants
Methane Makers
Bacteria can also be harmful
Bad Bacteria
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Certain bacteria act as pathogens and cause
tetanus, typhoid fever, pneumonia, syphilis,
cholera, food-borne illness and tuberculosis.
Streptococcus bacteria may cause small
infections like strep throat and some serious
diseases like pneumonia. Certain
streptococci may be fatal.
Still More
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Harmful bacteria in food cause botulism,
which can cause paralysis or even death if
even one-millionth of the bacterium is
ingested.
Bubonic plague, is a rod-shaped type of
bacterium which is well-known for its harmful
nature. Bacteria-carrying fleas found on
animals such as rats and mice transmit the
bacteria that are believed to have caused the
deaths of millions of people in human history
Shape of Bacteria
Bacilli or Rod
Cocci
Spirilla
Most common and Least Common
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The most common
form of bacteria is
Rod or Bacilli
The least common
shape of bacteria is
Spirilla