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Chapter 11, part D

Chapter 11, part D. The Prokaryotes: Domains Bacteria and Archaea. Spirochaetes. Borrelia Leptospira Treponema: Treponema pallidum , the cause of syphilis. Figure 11.23. Spirochaetes.

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Chapter 11, part D

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  1. Chapter 11, part D The Prokaryotes:Domains Bacteria and Archaea

  2. Spirochaetes • Borrelia • Leptospira • Treponema: Treponema pallidum, the cause of syphilis Figure 11.23

  3. Spirochaetes • The most distinctive characteristic of this order, however, is their method of motility, which makes use of two or more axial filaments (or endoflagella) enclosed in the space between an outer sheath and the body of the cell. • By rotating its axial filament, the cell rotates in the opposite direction, like a corkscrew, which is very efficient in moving the organism through liquids.

  4. Bacteroidetes • Anaerobic • Bacteroides. In mouth and large intestine • Cytophaga. Cellulose and chitin-degrading in soil

  5. Fusobacteria • Fusobacterium • Found in mouth • May be involved in dental diseases Figure 11.24

  6. Firmicutes • Low G + C • Gram-positive

  7. Clostridiales • Clostridium • Endospore-producing • Obligate anaerobes • Diseases associated with clostridia include tetanus, caused by C. tetani • Epulopiscium Figure 11.14 & 15

  8. Bacillales • Bacillus • Endospore-producing rods Figure 11.16b

  9. Bacillales • Staphylococcus • Cocci Figure 1.17

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