Transcript Kingdoms Archaebacteria and Eubacteria

Kingdoms Archaebacteria and
Eubacteria
Chapter 7
Two Kingdoms of Bacteria
Originally classified in Kingdom Monera
Kingdom Eubacteria (what we typically
think of as “bacteria”)
Kingdom Archaebacteria (“living fossils”;
live only in extreme environments)
Bacteria Characteristics:
Live almost EVERYWHERE!
Microscopic (smallest of the kingdoms)
Prokaryotic: do not have cell nucleus or
membrane-covered cell structures
Opposite from Eukaryotic: cells have a nucleus
PROKARYOTIC vs. EUKARYOTIC
 http://Cells Models
 PRO means NO
 EU means YES
Other characteristics/important terms:
Flagella: whiplike structure used for
MOVEMENT
Fission: the process bacteria use to
reproduce (RAPID!)
How do bacteria get their energy?
 Producers: produce their own food
CYANOBACTERIA: Eubacteria that lives in water;
probably led to first plants (performs Photosynthesis)
 Consumers: obtain energy from producers
Kingdom Archaebacteria
Survive best in extreme environments
Heat lovers (ocean rift vents)
• Thermophiles
Salt lovers (Dead Sea)
• Halophiles
Cold lovers (Antarctica)
• Psychrophiles
Methane makers (swamps)
• Methanogens
Archaebacteria Info
Kingdom Eubacteria
Larger than Archaebacteria
Important group=Cyanobacteria
Producers
May be yellow, black, or RED (Red Sea)
Provide food and oxygen
May prevent oxygen when too many multiply (aka
“Bloom”)
Shapes of Eubacteria
3 Shapes:
Cocci (think “C” circle/sphere)
Bacilli (rod shaped)
Spirilla (think “spiral”)
Cocci (sphere)
Bacillus (rod shaped)
Spirilla (spiral shaped)
Comparison of shapes:
Bacteria and YOU!!!
 Bacteria can be helpful.
Foods
 Making and preserving
Decomposers
 Waste Management
Produce Antibodies that fight Pathogens
 Bacteria can be harmful.
Disease
 Microbe World
 More Info
Bacteria in the Cafeteria
Activity Link