Download Bacteria - AaronFreeman

Bacteria
Kingdom
Pro vs. Eu
Uni vs. Multi
Auto vs. Hetero
Archaebacteria
PRO
UNI
BOTH
Eubacteria
PRO
UNI
BOTH
Bacterial Structure
Bacillus – rod shaped
Spirillium – spiral shaped
Coccus – circular shaped
What Shape?
Feeding Habits
What is an Autotroph?
Autotroph: Photosynthesis
Produce
own
energy
Example: Cyanobacteria are
photosynthetic
Autotroph: Chemosynthesis
Use hydrogen
sulfide from
deep ocean
vents
What is a Heterotroph?
Heterotroph: Parasitic
• Bacteria feeds
off of the host.
• Bacteria
benefits, host
is harmed
Example: Bacillus anthracis
• Bacillus anthracis causes
anthrax, a deadly disease
in cattle and a potential
bioweapon against
humans.
• The infection is
characterized by a severe
hemorrhage and
inflammation. The lung
and skin are often
involved.
Example: Staphylococcus
• Staphylococcus
(a.k.a. staph) can
cause serious
infections and is
one of the most
drug-resistant
bacteria.
Example: Streptococcus
• Streptococcus
pneumoniae
causes strep
throat, meningitis,
and pneumonia.
Heterotroph: Mutualistic
• Bacteria and the
host benefit from
each other
• If one were to die,
the other would
suffer or
eventually die
Example: E. coli
• Escherichia coli (a.k.a.
E. coli) lives in the
gut, where it helps
digest food and
produces Vitamin K.
•
The "bad" strain of E.
coli O157:H7 causes
severe food borne
sickness.
Example: Lactobacillus
bulgaricus
• Lactobacillus
bulgaricus helps
turn milk into
cheese, yogurt,
and other dairy
products
Heterotroph: Saprophytic
• Bacteria consumes
dead matter
• Bacteria functions
as a decomposer
Binary fission: Asexual
Reproduction, clone
Conjugation:
Sexual
Reproduction
- Pilus extends to
other bacterial
cell, replicate
plasmid, give
plasmid
Archaebacteria: Thermophiles
• Thermus aquaticus is
a heat-loving
bacterium that can
thrive in habitats
where the
temperature is
sometimes as hot as
140 degrees C (284
degrees F)
Archaebacteria: Methanogens
Found in anaerobes in digestional tracts
Found in sewage decomposers
Produce Methane Gas
Found in marshes
Found in marshes
Archaebacteria: Halophiles
•
Halophiles are microorganisms that
live and grow in high saline/salty
environments.
•
The saline content in their
environments is usually 10 times the
saline/salt content of normal ocean
water.. Normal ocean water has a
saline/salt level of 30 percent.
•
Some environments that halophiles
live in are the Great Salt Lake in Utah,
Owens Lake in California, the Dead
Sea
Dead Sea Floaters