Podcast
Questions and Answers
Which type of organisms can grow either in the presence or absence of oxygen?
Which type of organisms can grow either in the presence or absence of oxygen?
- Obligate aerobes
- Aerotolerant anaerobes
- Microaerophiles
- Facultative anaerobes (correct)
What is the key characteristic of aerotolerant anaerobes?
What is the key characteristic of aerotolerant anaerobes?
- They require oxygen for growth
- They cannot survive in the presence of oxygen
- They can perform metabolic processes in an anaerobic environment (correct)
- They are examples of Enterobacteriaceae
Which organism requires 2% to 10% Oxygen for growth?
Which organism requires 2% to 10% Oxygen for growth?
- Enterobacteriaceae
- Propionibacterium acnes (correct)
- Campylobacter
- Treponema pallidum
What enzymes do obligate aerobes and facultative anaerobes contain to counter the toxic effects of oxygen?
What enzymes do obligate aerobes and facultative anaerobes contain to counter the toxic effects of oxygen?
Which organisms use light as their energy source?
Which organisms use light as their energy source?
What type of organisms utilize the energy produced by organic compounds?
What type of organisms utilize the energy produced by organic compounds?
What is the ideal temperature for promoting the growth of anaerobes?
What is the ideal temperature for promoting the growth of anaerobes?
How long does it take to achieve an anaerobic environment in a Gas Pak Jar?
How long does it take to achieve an anaerobic environment in a Gas Pak Jar?
What indicates the proper functioning of the catalyst when using a Gas Pak Jar?
What indicates the proper functioning of the catalyst when using a Gas Pak Jar?
What can be a reason for a failure to achieve an anaerobic condition in an anaerobic jar?
What can be a reason for a failure to achieve an anaerobic condition in an anaerobic jar?
What is a disadvantage of using an anaerobic jar for culturing bacteria?
What is a disadvantage of using an anaerobic jar for culturing bacteria?
How long might it take for the methylene blue indicator to change color in a Gas Pak Jar?
How long might it take for the methylene blue indicator to change color in a Gas Pak Jar?
Which of the following is NOT a physiological requirement of bacteria?
Which of the following is NOT a physiological requirement of bacteria?
Which type of bacteria absolutely do not require the presence of oxygen and die after prolonged exposure?
Which type of bacteria absolutely do not require the presence of oxygen and die after prolonged exposure?
Which bacteria require the presence of oxygen to grow and thrive?
Which bacteria require the presence of oxygen to grow and thrive?
What is the range of oxygen content in room air where some bacteria grow well?
What is the range of oxygen content in room air where some bacteria grow well?
Which bacteria can thrive in both the presence and absence of oxygen?
Which bacteria can thrive in both the presence and absence of oxygen?
What is a characteristic example of an obligate anaerobe among bacteria?
What is a characteristic example of an obligate anaerobe among bacteria?
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