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Prokaryotes - introduction IB Biology

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designed as a short introduction to prokaryotes as part of 1.2 IB Biology course

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Prokaryotes - introduction IB Biology

  1. 1. Prokaryotic cells
  2. 2. Prokaryotic cells: the bacteria
  3. 3. Prokaryotic cells  Primitive  No nucleus containing DNA  No membrane-bound (or “membraneous”) organelles  Varied metabolisms: fermentation, aerobic respiration, photosynthesis, nitrogen fixation
  4. 4. Prokaryotic cell  1-10 micrometers
  5. 5. Draw:  Cell wall  Plasma membrane  Cytoplasm  Ribosomes  Nucleoid region (area of naked DNA)  Flagellum  Mesosome  Fimbriae  Pilli  (these last two look the same
  6. 6. Electron micrograph of bacterium
  7. 7. Binary fission Not mitosis as no Chromosomes are formed

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