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