lecture 8.txt

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epaynich
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lecture 8.txt
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2010-04-27 15:27:10
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Micro lecture
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Micro 221 lecture 8
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  1. lecture 9
    bacterial cultures and growth
  2. test tube full of agar with slanted surface that lasts 1 year
    agar slants
  3. ____ _____ is when the division bacteria undergo creating 2 equal daughter cells.
    binary fission
  4. group of bacteria connected to a surface and each other forming a community
    biofilm
  5. derived by binary fission from a single cell
    clonal
  6. bacteria is put in glycerol and stored in freezer; lasts 20 years.. _____ _____
    freezer culture
  7. some bacteria can be freeze dried as powder
    lyphophilize
  8. organisms that are picky and must be provided with nutrients are called ____ ____
    nutritionally fastidious
  9. ____ media is when at least one ingredient is not defined (ex. yeast, cow)
    complex
  10. all ingredients can be listed by forumula and amount is called ____ media
    defined
  11. ingredient that lines blood to differentiate between different bacteria is called ____ media
    differential
  12. ingredients added to medias like salt or antibiotics for a selected bacteria is called ___ media
    selective
  13. bacteria that grow at low temps
    pyschroPHILE
  14. bacteria that grow at low to moderate temps
    pyschroTROPH
  15. bacteria that live at middle temps such as body temps
    mesophile
  16. bacteria which live at hot temps
    thermophile
  17. bacteria which grow at very high temps
    hyperthermophile
  18. ____tube of agar that is shaken with bacteria then allowed to grow to determine their preference for oxygen
    shake
  19. ____ _____ medium determine bacterial need for oxygen like shake tube
    fluid thiglycollate
  20. _____ ____ is the classification name when bacteria which need oxygen
    obligate aerobe
  21. ___ ____ is the classification name when bacteria is killed by oxygen
    obligate Anaerobe
  22. ____ ____ is the classification name when bacteria don�t need oxygen but grow better with it
    facultative anaerobe
  23. _________ is the classification name when bacteria needs a small amount of oxygen
    microaerophile
  24. ________ is the classification name when bacteria grows evenly with or without oxygen
    aerotolerant
  25. name the two enzymes which detoxifies oxygen
    catalase and superoxidase dismutase
  26. classification name of bacteria that live in environment with large H+ concentration which causes lots of H+ to come in; H+ must be actively pumped out
    acidophile
  27. classification name of bacteria that live in neutral environments
    neutrophile
  28. classification name of bacteria that live in alkaline environment that uses sodium gradient
    alkalophile
  29. term when cell must avoid lysis and plasmolysis
    osmolarity
  30. bursting of cell due to hypotonic environments
    lysis
  31. shrinking of cell due to hypertonic environments
    plasmolysis
  32. salt loving bacteria with special proteins which absorb salt
    halophile
  33. molecules that are produced inside cell to counterbalance plasmolysis
    osmoprotectant
  34. nutrional mutants that must be provided all nutrients
    auxotroph
  35. wild type of bacteria that can survive on anything
    prototroph
  36. classification name of bacteria that get energy from redox reactions
    chemotroph
  37. classification name of bacteria that get energy from sunlight
    phototroph
  38. classification name of bacteria that get electrons from reduced inorganic compounds like minerals
    lithotroph
  39. classification name of bacteria that get electrons from reduced organic compounds
    organotroph
  40. classification name of bacteria that get carbon from first principles like CO2
    autotroph
  41. classification name of bacteria that get carbon from organic compounds like glucose or fatty acids
    heterotroph

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