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Prokaryotes, Eukaryotes and Viruses

Prokaryotes, Eukaryotes and Viruses. Are they all living?. Living Cells. All living organisms are made up of two basic types of cells Prokaryotic cells are bacterial cells Eukaryotic cells are plant and animal cells. The Cell Theory. All living organisms are made of cells

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Prokaryotes, Eukaryotes and Viruses

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  1. Prokaryotes, Eukaryotes and Viruses Are they all living?

  2. Living Cells • All living organisms are made up of two basic types of cells • Prokaryotic cells are bacterial cells • Eukaryotic cells are plant and animal cells

  3. The Cell Theory • All living organisms are made of cells • All cells come from pre-existing cells • Cells are the basic unit of life

  4. Prokaryotes Bacterial cells

  5. A bacterium: • contains 0.001 times less DNA than Eukaryotes • is surrounded by a membrane and cell wall • lacks membrane-bound organelles

  6. Cyanobacteria - “blue-green algae” are bacteria that contain chloroplasts for photosynthesis

  7. Eukaryotes Plant and animal cells

  8. Plasma membrane • Cell wall in plant cells only • Cytoplasm (semifluid) • Cytoskeleton (suspend organelles and give shape) cyto=cell • Contains membrane bound organelles

  9. Viruses • Are they a type of cell? • No! Viruses are just genetic information surrounded by a protein coat

  10. Bacteriophage – a virus that infects bacteria

  11. Viruses can’t reproduce on their own • They need a host cell to “infect”

  12. PLANT CELL VIRUS ANIMAL CELL BACTERIAL CELL

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