Micro 2010

Card Set Information

Author:
mika147
ID:
38427
Filename:
Micro 2010
Updated:
2010-09-29 17:03:56
Tags:
Temperature
Folders:

Description:
Factors that Affect Bacterial Growth
Show Answers:

Home > Flashcards > Print Preview

The flashcards below were created by user mika147 on FreezingBlue Flashcards. What would you like to do?


  1. Psychrophiles:
    Cold-loving bacteria.Growth temperature is between -5C and 15C. They are usually found in the Arctic and Antarctic regions.
  2. Mesophiles
    Grow best at moderate temperatures. Their optimum growth temperature is between 25C and 45C. Most bacteria are mesophilic and include common soil bacteria and bacteria that live in and on the body.
  3. Thermophiles
    Thermophiles are heat-loving bacteria. Their optimum growth temperature is between 45C and 70C and are commonly found in hot springs and in compost heaps.
  4. Hyperthermophiles
    • Grow at very high temperatures. Their optimum growth temperature is between
    • 70C and 110C. They are usually members of the Archae and are found growing near hydrothermal vents at great depths in the ocean.
  5. Obligate aerobes
    Grow only in the presence of oxygen. They obtain their energy through aerobic respiration
  6. Microaerophiles
    Require a low concentration of oxygen (2% to 10%) for growth, but higher concentrations are inhibitory. They obtain their energy through aerobic respiration.
  7. Obligate anaerobes
    Grow only in the absence of oxygen and, in fact, are often inhibited or killed by its presense. They obtain their energy through anaerobic respiration or fermentation.
  8. Aerotolerant anaerobes
    They are like obligate anaerobes, cannot use oxygen to transform energy but can grow in its presence. They obtain energy only by fermentation and are known as obligate fermenters.
  9. Facultative anaerobes
    Grow with or without oxygen, but generally better with oxygen. They obtain their energy through aerobic respiration if oxygen is present, but use fermentation or anaerobic respiration if it is absent. Most bacteria are facultative anaerobes.

What would you like to do?

Home > Flashcards > Print Preview