BIMM 120 CH 5

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  1. Normal growth conditions for microbes (pressure, temp, pH)
    • sea-level
    • 20-40C
    • neutral pH
  2. T/F - bacteria have the same temp as their environment
    true
  3. T/F - microbes that grow in higher temp typically have lower growth rates
    false
  4. Growth rate ___ for every ___ rise in temp
    doubles; 10C
  5. order from lowest temp loving to highest temp loving
    psychrophiles, mesophiles, thermophiles, hyperthermophiles
  6. What do chaperones do during temp change?
    maintain the shape of the proteins
  7. organisms that grow under high pressure
    barophiles/piezophiles
  8. water activity for most bacteria
    >0.91
  9. microbes that require high salt concentrations
    halophiles
  10. classes of organisms differentiated by pH growth range
    • acidophiles (0-5)
    • neutrophiles (5-8)
    • alkaliphiles (9-11)
  11. converts superoxide radical to hydrogen peroxide
    superoxide dismutase
  12. converts hydrogen peroxide to water and oxygen
    catalase
  13. converts hydrogen peroxide to water and NAD+
    peroxidase
  14. infusion of a limiting nutrient and what it can lead to
    eutrophication; blooms
  15. D-value
    length of time it takes to kill 90% of population
  16. D. radiodurans
    • can survive high radiation
    • can repair radiation damaged DNA
  17. bacteriostatic vs. bactericidal
    stops growth vs kills
  18. common antibiotic targets
    • peptidoglycan
    • cell membrane
    • protein synthesis
    • DNA replication
  19. phage therapy
    treats bacterial diseases with a virus targeted to the pathogen
Author
ID
317078
Card Set
BIMM 120 CH 5
Description
bacteriology
Updated
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