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Home Q & A Board Biology-Related Homework Help Cell Biology
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avaggp avaggp
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6 years ago
The optimum pH for growth of most species of bacteria is
 
  A. pH 5.
  B. pH 7.
  C. pH 9.
  D. pH 6.


Shake tubes are used to determine the
 
  A. pH requirements for bacterial growth.
  B. temperature requirements for bacterial growth.
  C. oxygen requirements for bacterial growth.
  D. salt requirements for bacterial growth.


The enzymes that deal with toxic oxygen-containing molecules is/are
 
  A. glycolase.
  B. superoxide dismutase.
  C. catalase.
  D.
  cytochrome oxidase.
 
  E. superoxide dismutase AND catalase.


Which of the following is/are obligate aerobes?
 
  A. Clostridium botulinum
  B. Escherichia coli
  C. Micrococcus luteus
  D. Helicobacter pylori


Organisms that are indifferent to the presence of oxygen and do not use it are
 
  A. aerotolerant anaerobes.
  B. facultative anaerobes.
  C. obligate aerobes.
  D. microaerophiles.
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ChoraltreeChoraltree
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