The Anaerobe Epidemic
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Questions and Answers

Which of the following is true about anaerobes?

  • They are not present in seemingly aerobic conditions
  • They obtain energy through fermentation and use inorganic compounds as a terminal electron acceptor
  • They possess catalase, superoxide dismutase, and peroxidase enzymes
  • They outnumber aerobes in the intestines (correct)

    • Which of the following is a characteristic of obligate aerobes?

  • They use organic compounds as a terminal electron acceptor
  • They require oxygen as a terminal electron acceptor (correct)
  • They can grow in the presence or absence of oxygen
  • They obtain energy through fermentation

    • What is the estimated number of anaerobes in the colon per gram?

  • 105/ml
  • 1000 times > aerobes
  • 1011/gm (correct)
  • 108/ml

    • Which of the following is a characteristic of facultative anaerobes?

    <p>They can grow in the presence or absence of oxygen</p> Signup and view all the answers

    Why are anaerobes susceptible to oxygen derived free radicals?

    <p>They possess catalase, superoxide dismutase, and peroxidase enzymes</p> Signup and view all the answers

    Which of the following is a characteristic of obligate anaerobes?

    <p>They use organic compounds as a terminal electron acceptor.</p> Signup and view all the answers

    Which of the following habitats has the highest number of anaerobes compared to aerobes?

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

    Which of the following is NOT a reason why oxygen is toxic to anaerobes?

    <p>They do not have any other source of energy.</p> Signup and view all the answers

    Which of the following is a characteristic of facultative anaerobes?

    <p>They can grow in the presence or absence of oxygen.</p> Signup and view all the answers

    What is the estimated number of anaerobes in the small intestine per milliliter?

    <p>105</p> Signup and view all the answers

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