MB 102 EXAM 2

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jujeebe
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170080
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MB 102 EXAM 2
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2012-12-06 17:15:34
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microbio 102 exam 2 flashcards
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  1. Treponema pallidum
    • Spirochete 
    • -causes syphills
  2. Borrelia recurrentis
    • Spirochete
    • -causes relapsing fever
  3. Leptospira sp.
    • Spirochete
    • -causes leptospirosis (kidney infection)
  4. Borrelia burgdorferi
    • Spirochete
    • -causes lyme disease
  5. Spirochetes: gram stain?
    spirochetes: gram negative
  6. Spirochetes: motility mode?
    motile by means of axial filaments
  7. Spirochetes: body shape good for?
    body shape efficient for moving thru body fluids
  8. How are spirochetes visualized?
    • -staining with a fluorescent stain
    • -view thru a dark-field microscope
  9. Legionella pneumophilia
    • gram negative aerobic rods and cocci
    • - legionnaire's disease
  10. Pseudomonas aeruginosa 
    gram negative aerobic rods and cocci

    • -opportunistic pathogen
    • -pigment production: pyocyanin - blue pus
    • -common cause of ear infection and nosocomial infections
  11. Bordetella pertussis
    • gram negative aerobic rods and cocci
    • -whooping cough
  12. Brucella sp.
    gram negative aerobic rods and cocci

    -causes undulant fever in unpasteurized milk 
  13. Neisseria gonorrhoeae
    gram negative aerobic rods and cocci

    • -diplococcic 
    • -causes STD gonorrhea
  14. Facultatively anaerobic gram negative rods
    • AKA enteric or coliforms
    • commonly inhabit GI tract
    • group includes family Enterobacteriaceae (closely related species destinguished based on metabolic activity)
  15. Escherichia coli
    • Facultatively anaerobic gram negative rods
    • normal GI flora
    • can cause infant dysentery from fecal contamination
  16. Salmonella typhi
    • Facultatively anaerobic gram negative rods
    • typhoid fever
  17. Shigella sonnei
    • Facultatively anaerobic gram negative rods
    • bacillary dysentery
  18. Serratia marcescens
    • Facultatively anaerobic gram negative rods
    • opportunistic pathogen
  19. Proteus sp.
    • Facultatively anaerobic gram negative rods
    • -urinary, wound and burn infections
  20. Enterobacter spp.
    • Facultatively anaerobic gram negative rods
    • urinary and wound infections
  21. Klebsiella pneumoniae
    • Facultatively anaerobic gram negative rods
    • may be normal GI flora
    • can cause pneumonia
  22. Vibrio cholera
    • Facultatively anaerobic gram negative rods
    • slightly curved roods
    • causes Asiatic cholera
  23. Yersinia pestis
    • Facultatively anaerobic gram negative rods
    • causes 2 forms of plague
    • 1. bubonic - lymph node infection
    • 2. pneumonic - more serious, lung and bloodstream infection
  24. Rickettsias & Chlamydias: gram stain?
    Gram negative
  25. Rickettsias & Chlamydias
    • obligate intracellular parasites
    • major difference: rickettsias vectored by an arthropod
  26. Rickettsia prowanzekii
    • Rickettsias 
    • epidemic typhus
    • vector: ticks/ lice
  27. R. rickettsii
    • Rickettsias
    • rocky mountain spotted fever
    • vector: tick
  28. Coxiella burnetti
    • Rickettsias 
    • causes Q fever (respiratory infection)
  29. Chalmydia trachomatis
    • causes nongonococcal urethritis (common STD)
    • 2 life stages: 
    • 1. reticulate body - vegetative form
    • 2. elementary body - dormant, infectious stage
  30. Mycoplasmas
    • pleomorphic bacteria (many shapes) 
    • lack cell wall
  31. Mycoplasma pneumoniae
    • mycoplasma
    • cause primary, atypical pneumona (walking pnuemonia)
    • common tissue culture contaminant 
    • very slow grower
  32. gram positive cocci: found?
    found in soil, on skin, mucous membranes and skin glands
  33. Staphylococcus aureus
    • gram positive cocci
    • causes TSS, common food poisoning, skin boils
    • Grown on blood agar: yellow pale pigment produced 
  34. Staphylococcus epidermidis
    • gram positive cocci
    • white colonies
    • normal skin flora
    • opportunistic pathogen
  35. Streptococcus pneumoniae
    • gram positive cocci
    • cells usually arranged in pairs
    • causes pneumonia
  36. Streptococcus pyogenes
    • gram positive cocci
    • causes peripheral fever, strep throat, rheumatic fever, scarlet fever
    • 1. pathogenic streps: produce hemolysins (exoenzymes break down RBCs)
    • 2. alpha hemolysis: partial RBC breakdown, causes blood agar turn greenish tan
    • 3. beta hemolysis: total RBC breakdown, causes blood agar to clear
  37. Micrococcus spp.
    • gram positive cocci
    • usually nonpathogenic
    • several species produce red, yellow, and orange pigments
  38. Endospore-forming gram positive rods and cocci
    produce heat and chemical resistant endospores
  39. Bacillus anthracis
    • Endospore-forming gram positive rods and cocci
    • anthrax
  40. Bacillus thuringensis
    • Endospore-forming gram positive rods and cocci
    • biological insecticide 
  41. Clostridium spp.
    • Endospore-forming gram positive rods and cocci
    • obligate anaerobes
    • 1. C. tetani: tetanus
    • 2. C. perfringens: gas gangrene
    • 3. C. botulinum: botulism
  42. Mycobacterium
    • aerobic, nonmotile, gram positive
    • myco= fungus. sometimes growth resembles fungal mycelia BUT not fungus
    • cell walls = lipid called mycolic acid ==> stain acid fast
  43. Mycobacterium tuberculosis 
    • Mycobacterium
    • tuberculosis
  44. Mycobacterium leprae
    • Mycobacterium
    • causes leprosy
  45. Archaeobacteria 
    • includes halophiles (salt lover), methane producers, thermophiles 
    • most primitive bacteria forms
  46. Halobacterium spp
    • archaeobacteria
    • require high conc of salt (1.5 molar) to maintain cell wall
  47. Actinomycetes
    • form long filamentous branches of cells
    • bergey's manual: divided 5 groups on SPORE LOCATION and MYCELIUM (mass of filaments of cells) ARRANGEMENT 
    • most produce asexual spores called condidiospores to reproduce 
    • common soil inhabitabts
  48. Frankia sp. and Rhizobium sp.
    • anctinomycete
    • live in root nodules 
    • increase soil fertility in plants like legumes by NITROGEN FIXATION
  49. Streptomyces spp
    • actinomycete
    • common in soil
    • produces majority of commerical antibiotics

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