Dgalli76

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Author:
Anonymous
ID:
67120
Filename:
Dgalli76
Updated:
2011-02-17 17:36:59
Tags:
Microbiology
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Description:
Exam 2
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  1. Bacteria that lives and grows best in oxygen
    Obligate aerobe
  2. bacteria that lives and grows with or without oxygen
    Facultative aerobe
  3. bacteria that is destroyed by oxygen
    Obligate anaerobe
  4. What are the TWO categories for microbial growth
    • 1. Physical growth
    • 2. Chemical growth
  5. List the 4 requirements for Physical growth of microbes
    • 1. Temperature
    • 2. pH
    • 3. Osmotic Pressure
    • 4. Hydrostatic pressure
  6. List the 3 requirements for Chemical growth in microbes
    • 1. CHONPS
    • 2. Enzymes
    • 3. Trace elements
  7. Microbial growth is the increase in ____ __ ___
    number of cells
  8. Was is the optimum growth temperature for microbial growth?
    25 degrees Cel.
  9. What is the pH for most bacteria to grow
    pH 6.5 to 7.5
  10. What is the pH for molds and yeasts to grow
    pH 5 to 6
  11. Water pressure is directly proportional to elevation is what?
    Hydrostatic pressure
  12. What are Macronutrients
    CHONPS: carbon, hydrogen, oxygen, nitrogen, phosphorus, sulfur
  13. What are Micronutrients
    Trace elements

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