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Microbes are organisms that we can not see without using
a microscope.
The major groups of microbes:
Eubacteria
Archeobacteria
Protozoans
Fungi
Viruses
http://www.bact.wisc.edu/Bact303/MajorGroupsOfProkaryotes
http://www.bact.wisc.edu/Bact303/MajorGroupsOfProkaryotes
“True Bacteria”
http://www.bact.wisc.edu/Bact303/MajorGroupsOfProkaryotes
Three basic shapes
cocci
bacilli
spirilla
Causes Strep throat
Streptococcus pyogenes
http://www.bact.wisc.edu/Bact330/lecturespyo
The spirochete Treponema pallidum
Causes Syphilis
http://www.bact.wisc.edu/Bact330/lecturesyphilis
Causes Lyme disease..
Ticks are the carriers.
Borrelia burgdorferi FA stain (CDC)
http://www.bact.wisc.edu/Bact330/lecturelyme
Stained with violet dye
purple
Treated then with Iodine
Rinsed with alcohol
Stained again with Safranine pink
Gram negative
Gram positive
Stains work
differently
with different
cell walls
http://www-micro.msb.le.ac.uk/Video/Bcereus.html
A Gram positive rod is Bacillus cereus. This bacteria is one
of a group of gram postive rods which are aerobic,
ubiquitous and form endospores .Because its spores are heat
resistance, they are difficult to kill. Toxins may be
produced. Food spoilage is a favorite of these organisms
“Ancient Bacteria”
Thermacidophiles
Methanogens
Halophiles
http://www.bact.wisc.edu/Bact303/
b12
Boulder Springs, Yellowstone
http://www.uwinnipeg.ca/~simmons/virtual.htm
http://www.bact.wisc.edu/Bact303/b12
http://www-micro.msb.le.ac.uk/Video/video.html
http://biology.nwc.cc.wy.us/biology/b1010lab/bactyp
es.htm
http://www.kent.k12.wa.us/staff/kloschky/MoneransFol
der/eubacteria.html
PTTL03