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Domain Archaea

Domain Archaea. Kingdom Archaebacteria. Phyla. Crenarchaeota Euryarchaeota Korarchaeota Nanoarchaeota Thaumarchaeota. Archaebacteria. Archea – means ancient Unicellular Prokaryotes No membrane bound organelles No organized nucleus. Cell membrane consists of a phospholipid bilayer

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Domain Archaea

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  1. Domain Archaea Kingdom Archaebacteria

  2. Phyla • Crenarchaeota • Euryarchaeota • Korarchaeota • Nanoarchaeota • Thaumarchaeota

  3. Archaebacteria • Archea – means ancient • Unicellular • Prokaryotes • No membrane bound organelles • No organized nucleus

  4. Cell membrane consists of a phospholipid bilayer The types of lipids are significantly different from all other membranes Most Archaebacteria have a cell wall that provides protection Move using flagella Cell Structure

  5. Cell Structure • Have many different shapes • Spherical • Rod shaped • Spiral • Flat • Needle like

  6. Metabolism • Heterotrophs • Lithotrophs – inorganic compounds • Organotrophs – organic compounds • Autotrophs • Phototrophs – use light to make food for energy

  7. Environment Archaea are microbes. Most live in extreme environments. These are called extremophiles. Other Archaea species are not extremophiles and live in ordinary temperatures and salinities. Some even live in your guts!

  8. Environment Methanogens – produce methane Thermophile - love heat would probably freeze to death at ordinary room temperature. Halophiles – love salt, called hypersaline environments

  9. Respiration Obligate anaerobe – must NOT have oxygen Obligate aerobe - must have oxygen Faculative anaerobe – can have oxygen or not

  10. Reproduction Asexual reproduction – called binary fission Conjugation – mixing DNA between two cells

  11. Domain Bacteria Kingdom Eubacteria

  12. Phyla • Grouped based on qualities of their shape and membrane structure • More than 20 different Phyla

  13. Eubacteria • Eu - means True • Unicellular • Prokaryotes • No membrane bound organelles • No organized nucleus

  14. Cell membrane consists of a phospholipid bilayer Many Eubacteria have a cell wall that provides protection Move using flagella Cell Structure

  15. Cell Structure • Have three different shapes • Cocci • spherical • Bacilli • Rod shaped • Spirilla • Spiral

  16. Cell Structure • Endospore • Created by a bacteria when conditions become unfavourable • A hard “shell” surrounding the genetic material

  17. Metabolism • Heterotrophs • Lithotrophs – inorganic compounds • Organotrophs – organic compounds • Autotrophs • Phototrophs – use light to make food for energy

  18. Environment Bacteria frequently secrete chemicals into their environment in order to modify it favourably Live in a variety of environments

  19. Respiration Obligate anaerobe – must NOT have oxygen Obligate aerobe - must have oxygen Faculative anaerobe – can have oxygen or not

  20. Reproduction Asexual reproduction – called binary fission Conjugation – mixing DNA between two cells

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