Download B 1_1 Bacteria - Philip Rogers Elementary School

Bacteria
B 1.1 Bacteria
Bacteria
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Some types of bacteria live in extreme
environments where few other organisms can
survive.
Bacteria normally have three basic shapes—
spheres, rods, and spirals.
Sphere-shaped bacteria are called cocci (KAHK
si), rod-shaped bacteria are called bacilli (bah
SIH li), and spiral-shaped bacteria are called
spirilla (spi RIH luh).
Bacteria
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Bacterial cells are classified as prokaryotic.
Some bacteria also have an outer coating called a
slime layer.
A slime layer enables a bacterium to stick to
surfaces and reduce water loss.
Many bacteria that live in moist conditions also
have whiplike tails called flagella to help them
move.
Bacteria
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Fission is a process that produces two new cells
with genetic material identical to each other and
that of the original cell
Most bacteria are consumers.
An organism that uses oxygen for respiration is
called an aerobe (AY rohb).
In contrast, an organism that is adapted to live
without oxygen is called an anaerobe (AN uh
rohb).
Bacteria
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Bacteria are classified into two kingdoms—
eubacteria (yew bak TIHR ee uh) and
archaebacteria (ar kee bak TIHR ee uh).
One important group of producer eubacteria is
the cyanobacteria (si an oh bak TIHR ee uh).
Archaebacteria are divided into groups based on
where they live or how they get energy.
Bacteria
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cocci
sprilla
bacilli
flagella
aerobe
anaerobe
Eubacteria
Archaebacteria