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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