Aerobic and Anaerobic Organisms Quiz
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Questions and Answers

What type of bacteria are destroyed by oxygen?

  • Microaerophiles
  • Facultative anaerobes
  • Obligate aerobes
  • Obligate anaerobes (correct)
  • Which type of bacteria have the ability to neutralize toxic by-products of oxygen metabolism?

  • Microaerophiles
  • Obligate anaerobes
  • Obligate aerobes
  • Facultative anaerobes (correct)
  • In the presence of oxygen, which type of bacteria partially neutralizes toxic by-products?

  • Obligate aerobes
  • Facultative anaerobes
  • Microaerophiles (correct)
  • Obligate anaerobes
  • What is the characteristic of obligate aerobes regarding the breakdown of toxic by-products of oxygen metabolism?

    <p>They fully neutralize all toxic by-products</p> Signup and view all the answers

    Which type of bacteria is most vulnerable to the toxic effects of oxygen?

    <p>Obligate anaerobes</p> Signup and view all the answers

    Why are obligate anaerobes destroyed by oxygen?

    <p>Due to the absence of enzymes to neutralize toxic by-products of oxygen metabolism</p> Signup and view all the answers

    What distinguishes facultative anaerobes from aerobes?

    <p>Facultative anaerobes can survive in both anaerobic and aerobic conditions</p> Signup and view all the answers

    What enzyme is essential for aerotolerant anaerobes to partially neutralize toxic by-products of oxygen metabolism?

    <p>Catalase</p> Signup and view all the answers

    What characteristic helps microaerophiles thrive in low oxygen conditions?

    <p>Possession of superoxide dismutase (SOD) enzymes</p> Signup and view all the answers

    Why are aerobes and facultative anaerobes less vulnerable to oxygen toxicity compared to obligate anaerobes?

    <p>They possess both superoxide dismutase (SOD) and catalase or peroxidase enzymes</p> Signup and view all the answers

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