microbiology key facts/concepts lect. 1

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  1. How are microorganisms important?
    1.
    2.
    3.
    4.
    5.
    1. Oldest life form

    2. Most abundant (more than BUGS!)

    3. Carry out major processes for bio-geochemical cycles (Recycling! inroganic->organic material)

    • 4. Can live in places unsuitable for other organisms
    • (Resilient)

    • 5. Other life forms require microbes to survive
    • (others depend on them)
  2. How many bacterial cells are in a colony?

    a. 1000
    b. 1,000,000
    c. 10
    d. 10,000,000
    How many bacterial cells are in a colony?

    • a. 1000
    • b. 1,000,000
    • c. 10
    • d. 10,000,000
  3. Image Upload
    • 2 mm
    • Image Upload
  4. What are the characteristics of living things?

    1.
    2.
    3.

    4.
    5.
    6.
    What are the characteristics of living things?

    • 1. Eat (metabloism)
    • 2. Grow/Reproduce
    • 3. Evolve

    • 4. Move
    • 5. Differentiate
    • 6. Communicate
  5. Name the two ways cells behave?

    1.
    2.
    Name the two ways cells behave?

    • 1. As catalyists: carrying out chemcial reactions
    • 2. As coding devices: (making proteins)
  6. When did blue green algae (cyanobacteria) come about?
    Image Upload
    3.8 billion years ago!!!
  7. When did plants come about? Image Upload
    600 million years ago!!!

    or

    .6 x 109 yrs ago
  8. When did humans come about?
    Image Upload
    Image Upload
  9. What did cyanobacteria excrete?
    Oxygen
  10. Life on Earth timeline

    Image Upload
    Image Upload
  11. Earth level Homeostatsis- environment on microbe
    Microbe Evolution/microbial growth

    Resources (nutrients) and environmental conditions controll?
    Diversity and Abundance
  12. Earth level Homostatasis- Mircobe on environment

    Microbial communities affect?
    The physical and chemical properties of their habitats
  13. Microbial communities have?
    different microbe species
  14. Bacteria type:
    Red=
    Green=
    Image Upload
    • Bacteria type: Nitrifing bacteria sewage
    • Red= ammonia (NH3) oxidizers
    • Green= nitrite (NO2-) oxidizers
  15. Name of the first cell?
    • LUCA
    • (last universal common ancestor)
  16. The number of microbes in the world approximately is?
    5 x 1030 cells
  17. Where can you find microbes?
    In almost any environment, but MOST are found in oceans and terrestrial subsurfaces
  18. TRUE/FALSE

    The greater number of microbes are benefical rather than harmful
    True
  19. TRUE/FALSE

    There are more harmful microbes than benefical ones
    False
  20. How do microbes benefit humans?
    • 1. Bioremediation (pollution clean up)
    • 2. Biofuels
    • 3. Agriculture (fertilize soil through nitrogen fixation)
    • 4. Medicine (gene therapy, drug/protein production)
  21. For microbial based foods, what are the negative and positive impacts?
    Negative: can require specialized preservatives

    • Postive: fermentation
    • 1. Makes alcohol
    • 2. Leavens bread
    • 3. Perservation technique-> to create lactic acid in sour foods such as sauerkraut, dry sausages, kimchi and yogurt, or vinegar (acetic acid) for use in pickling foods.
Author:
Anonymous
ID:
100131
Card Set:
microbiology key facts/concepts lect. 1
Updated:
2011-09-07 00:57:56
Tags:
Microbiology
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Description:
Lecture 1 key facts/concepts
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