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      Question

      Which of the following microorganisms cannot tolerate

      oxygen?
      A Clostridium botulinum Correct Answer Incorrect Answer
      B Staphylococcus aureus Correct Answer Incorrect Answer
      C Penicillium roquefortii Correct Answer Incorrect Answer
      D E. coli Correct Answer Incorrect Answer

      Solution

      C. botulinum is an obligate anaerobe; oxygen inhibits its growth. S. aureus and E. coli are facultative, while P. roquefortii is aerobic.ย 

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