Microbiology - Ch. 6

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Microbiology - Ch. 6
2010-06-06 17:06:45

Info. for test 1
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  1. What is the deliberate growth of microorganisms in the lab?
  2. a substrate or nutrient medium upon which microbes are cultured in a lab

    can be liquid (broth), solid (agar), or semisolid depending upon the procedure & microbe
    culture medium (media)
  3. a macroscopically visible mass of growth of microbes in or on a soild culture medium

    represents a population of microbes from 1 living cell

    central = older ; periphery = younger
  4. unwanted organism, usually with reference to a pure culture of bacteria or some other microbe
  5. microbial culture grown in culture tubes, petri dishes or other artificial environments

    "in glass"
    in vitro
  6. microbes grown on tissue or cell cultures such as chick or duck embryos, monkey kidney tissue, etc

    used to cultivate obligate parasites suches as viruses or rickettsias

    "in life"
    in vivo
  7. an organism that must be a parasite in order to live
    obligate parasite
  8. an organism tat lives on dead or decaying organic matter
  9. media that has an exact chemical composition that allows it to be reproduced easily
    chemically defined (synthetic) medium
  10. a complex polysaccharide isolated from algae in the Indian Ocean

    it is used in solid and semisolid media to serve as a substrate to grow microbes on

    has a melting point of 100C and solidifies at 42C

    it is indigestible by microorganisms and nutrients added to it can be extracted by them
  11. medium to which reagents, dyes, etc. have been added to select for or against a certain group of bacteria
    selective medium
  12. various vitamins, mineral and other substances hce veen added to promote the growth of fastidious microorganisms

    those with extremely specific nutrient requirements
    enriched medium
  13. medium with special formulations to determine if a microbe is utilizing a specific nutrient, produceing a specific product or is sensitive to an antibiotic
    assay medium
  14. any medium that promotes the growth of a wide variety of microorganisms
    enumeration medium
  15. medium that allows for distinction or differentiation between various bacteria
    differential medium
  16. one which selects for and differentiates between a group of bacteria
    selective & differential medium
  17. an organism that produces its own organic molecules (nutrients) from inorganic starting material
  18. an organism that acquires its organic molecules (nutrients) from substances produced by other organisms
  19. bacteria that use light energy as an energy source and CO2 as a carbon source for metabolism

  20. bacteria that uses inorganic molecules as a carbon and energy source
  21. bacteria that uses light as an energy source and organic molecules as a carbon source for metabolism
  22. bacteria that uses organic molecules as a carbon and energy source