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MICROBIAL GROWTH

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  • What can happen if microbes are exposed to pH levels outside their growth range?
    Inhibited or no growth
  • True or False: All microorganisms grow at neutral pH.
    False
  • Microbial growth refers to: A. An increase in cell size B. An increase in cell number C. A change in cell color D. Cell aging
    B
  • What is the main form of reproduction in bacteria?
    Binary Fission
  • Which classification fits bacteria found in ice glaciers? A. Thermophiles B. Psychrophiles C. Acidophiles D. Mesophiles
    B
  • True or False: Microorganisms that grow in pH above 10 are called acidophiles.
    False
  • Which microorganism would most likely be found in a hot spring? A. E. coli B. Thermus aquaticus C. Vibrio cholerae D. Lactobacillus
    B
  • Differentiate anaerobic and aerobic microorganisms
    Aerobic organisms require oxygen for survival. Anaerobic organisms, on the other hand, do not require oxygen
  • Which factor does not affect microbial growth? A. Temperature B. Oxygen C. Age of the observer D. pH
    C
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