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Nitrogen fixation is a process that occurs in some bacteria.  

  The only effective way to store bacterial cultures for short periods of time is to arrest their metabolism by freezing.  

A microorganism found living under conditions of high __________ is a barophile.

Which of the following growth factors would NOT be required by microbes which do not utilize electron transport chains?

An epidemiologist is investigating a new disease and observes what appear to be bacteria inside tissue cells in clinical samples from victims. The scientist wants to try to isolate the bacteria in the lab. What culture conditions are most likely to be successful?

  Nitrogen fixation is a process that occurs in all bacteria.  

Which of the following statements/statement  – incorrect? A. Bacteria that thrive at human body temperatures are classified as ____mesophiles______. B.  Alkalinophiles can survive in water up to pH ____14______.  C. Cells that are exposed to hypertonic environments will exhibit _______crenation___.    

Which of the following interferes with cell wall synthesis by blocking alanine bridge formation?

MacConkey agar plates represent __________ medium.

Obligate anaerobes may be cultured in the laboratory