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Transcript
Domain Bacteria: Eubacteria
Domain Archea: Archaebacteria
Archaebacteria and Eubacteria
Previously called Monera
Prokaryotes
No Nucleus,
No membrane bound
organelles
6 Major Kingdoms:
Archaebacteria
2. Eubacteria
Domain Eukaryote
1.
Protista
2. Fungi
3. Planta
4. Animalia
1.
2.
3.
1.
4.
5.
6.
prokaryotes
prokaryotes
Unicell, and
multicelled
Mostly Multicellular,
heterotrophs
Muticelled,
autotrophs
Muticelled
heterotrophs
Bacteria Kingdom Characteristics:
Archaebacteria
 Extremists
 Saline (salt)
habitats
 Hot sulfur
springs
Eubacteria
 Heterotrophs
 Parasites
 Saprobes
 Nitrogen
fixation
 Photosynthetic
autotrophs
Penicillin Mold (Fungus)
Penicillin Mold Kills Bacteria
First “Antibiotic”
 Alexander
Fleming
discovered in
1928
 Penicillin inhibits
the growth of
bacteria

Macrophage (white blood cell)
engulfs a bacterium in the
immune system
Bacteria Structure:
Classified by Shape, Size,
Staining, Environment, & Color
Streptococcus Bacteria
Below: Cynobacteria
and Salmonella
Autotroph Bacteria
Flagellated Bacteria
Spiral or Spirilli Bacteria
Example: Syphilis-STD
Bacilli Bacteria
Tuberculosis
Tuberculosis: Bacterial Infection
Bacterial Reproduction:
Genetic
Recombination
(Sexual)
 Conjugation
 Exchange of DNA
 Variety
Asexual
 Binary
fission
 No Variety
Aerobic Bacteria require oxygen
& can make cavities!
Anaerobic Bacteria live without oxygen, in
our intestines & may be in polluted waters
 E.
Coli from
human feces
 Helpful in the
intestines
 Harmful in
other parts of
the body
Endospores
Thick Walled structures which
keep bacteria in a Dormant state
 No reproduction during this time
 Metabolic activity is shut down
 Protects bacteria against hostile
environments
 “Come back to life” with favorable
conditions

Bacteria can be
Helpful and Harmful
Helpful
1. Nitrogen fixation
2. Decomposition
3. Used to make Food
Harmful
1. Bacteria Cause Diseases
Making Cheese with Bacteria
?Life on Mars?
This meteorite was probably blasted off of the
surface of the planet Mars about 16 million
years ago by an impact with an asteroid and
travelled through space to the earth, where it
landed on Antarctica about 13,000 years ago.
Some scientists believe that the rod-shaped
structures across the top and center of this
image may be tiny fossilized bacteria. Many
other scientists believe that the structures were
formed by processes other than life.
NASA/Science Source/Photo Researchers, Inc.
"Martian Meteorite ALH84001," Microsoft® Encarta®
Encyclopedia 2000. © 1993-1999 Microsoft Corporation. All rights
reserved.
Bacteria Cultures:





Inoculate = to place
Agar = culture
medium (nutrients)
One colony
(circle)= billions of
bacteria
A colony begins
from one bacterium
Incubate at 37oC=
body temperature
Genetic Engineering of Insulin
THE END