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CHAPTER 11 The Prokaryotes Domains Bacteria and Archaea. One _________________, not in a membrane No __________ No __________ Peptidoglycan cell walls(_______) Binary fission. CHAPTER 11 The Prokaryotes Domains Bacteria and Archaea. One _________________, not in a membrane

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CHAPTER 11 The Prokaryotes Domains Bacteria and Archaea


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    1. CHAPTER 11The Prokaryotes Domains Bacteria and Archaea • One _________________, not in a membrane • No __________ • No __________ • Peptidoglycan cell walls(_______) • Binary fission

    2. CHAPTER 11The Prokaryotes Domains Bacteria and Archaea • One _________________, not in a membrane • No __________ • No __________ • Peptidoglycan cell walls(_____________) • Binary fission

    3. Domain ___________ • PHYLUM _________________ • Diverse shapes • Gram-______________ • CLASSES-based on _____ sequences • _______proteobacteria • _______proteobacteria • _______proteobacteria • _______proteobacteria • _______proteobacteria

    4. ()alphaProteobacteria • Human pathogens: ______________ B. hensela - Cat-scratch disease* ________ - Brucellosis • Obligate intracellular • parasites: • ____________ sp. • Arthropod-borne, spotted fevers • R. rickettsii - Rocky Mountain Spotted Fever

    5. The  (beta) Proteobacteria ___________ sp.* Chemoheterotrophic, Gram (-) rods B. ___________ ‘whooping cough’ ____________ sp. Chemoheterotrophic, Gram (-) cocci N. meningitidis N. gonorrhoeae

    6. The  ___________ Proteobacteria _______________ sp. Short, G(-) rods, facultative anaerobes E. coli 0157:H7* ____________ sp. Curved, Gram (-) rods Found in coastal water Vibrio cholerae causes cholera* Pasteurella multicida: dog, cat bites

    7. The  (gamma) Proteobacteria • The  (gamma) Proteobacteria • Enterobacteriales (enterics): • Peritrichous flagella, facultatively anaerobic • Enterobacter • Erwinia • Escherichia • Klebsiella • Proteus • Salmonella • Serratia • Shigella • Yersinia

    8. The  ___________ Proteobacteria Environmental, _____________ Bdellovibrio sp. - prey on other bacteria Desulfovibrio sp. - use S instead of O2 as final electron acceptor Myxococcus sp. - gliding. Cells aggregate to form myxospores

    9. The  _________ Proteobacteria Helicobacter sp. Multiple flagella H. pylori Peptic ulcers, _____________ _______________ sp. One polar flagellum Gastroenteritis

    10. The ____proteobacteria Gram-Negative Bacteria __________ trachomatis trachoma urethritis-sexually transmitted

    11. Spirochaetes • __________________ -Lyme’s disease • __________________ -Syphilis Figure 11.23

    12. __________________Gram-positive bacteria • Low _______ ratios Mycoplasma pneumoniae Streptococcus sp. S. pyogenes scarlet fever rheumatic fever Staphylococcus aureus Clostridium difficile

    13. Bacillaleslow G and C ratio, Gram positive bacteria Staphylococcus aureus Morphology - Cocci in clusters Diseases – _________, cellulitis, food poisoning Portal of Entry –nasal passages; skin, _________ Transmission – air-borne, _______, ingestion Diagnosis – microscopic and cultural morphology, ___________ assays Treatment – penicillin; methicillin; vancomycin *______ Figure 1.17

    14. _____________________Gram-positive High G + C ratio N. asteroides pulmonary infections Actino- mycosis- tissue destruction of head & neck P. acnes- acne

    15. _________BACTERIAHigh G + C ratio, Gram _________ bacteria _______________ sp. Morphology - filamenous, branching Disease - rarely pathogenic ______________ sp. Morphology – small rods; _____________ Diseases - ___________, leprosy, skin infections Portal of Entry – _____________ tract, skin Transmission – coughing, sneezing, __________ Diagnosis - microscopic and cultural properties, staining characteristics, biochemical properties Treatment – ______________, ethambutol, rifampin ____________