10 Questions
Which of the following is true about anaerobes?
They outnumber aerobes in the intestines
Which of the following is a characteristic of obligate aerobes?
They require oxygen as a terminal electron acceptor
What is the estimated number of anaerobes in the colon per gram?
1011/gm
Which of the following is a characteristic of facultative anaerobes?
They can grow in the presence or absence of oxygen
Why are anaerobes susceptible to oxygen derived free radicals?
They possess catalase, superoxide dismutase, and peroxidase enzymes
Which of the following is a characteristic of obligate anaerobes?
They use organic compounds as a terminal electron acceptor.
Which of the following habitats has the highest number of anaerobes compared to aerobes?
Intestines
Which of the following is NOT a reason why oxygen is toxic to anaerobes?
They do not have any other source of energy.
Which of the following is a characteristic of facultative anaerobes?
They can grow in the presence or absence of oxygen.
What is the estimated number of anaerobes in the small intestine per milliliter?
105
Test your knowledge on the epidemiology of anaerobes and their susceptibility to oxygen. Discover where these bacteria are commonly found and how they outnumber aerobes in certain habitats.
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