10 Questions
What type of bacteria are destroyed by oxygen?
Obligate anaerobes
Which type of bacteria have the ability to neutralize toxic by-products of oxygen metabolism?
Facultative anaerobes
In the presence of oxygen, which type of bacteria partially neutralizes toxic by-products?
Microaerophiles
What is the characteristic of obligate aerobes regarding the breakdown of toxic by-products of oxygen metabolism?
They fully neutralize all toxic by-products
Which type of bacteria is most vulnerable to the toxic effects of oxygen?
Obligate anaerobes
Why are obligate anaerobes destroyed by oxygen?
Due to the absence of enzymes to neutralize toxic by-products of oxygen metabolism
What distinguishes facultative anaerobes from aerobes?
Facultative anaerobes can survive in both anaerobic and aerobic conditions
What enzyme is essential for aerotolerant anaerobes to partially neutralize toxic by-products of oxygen metabolism?
Catalase
What characteristic helps microaerophiles thrive in low oxygen conditions?
Possession of superoxide dismutase (SOD) enzymes
Why are aerobes and facultative anaerobes less vulnerable to oxygen toxicity compared to obligate anaerobes?
They possess both superoxide dismutase (SOD) and catalase or peroxidase enzymes
Test your knowledge on aerobic and anaerobic organisms, including obligate aerobes, obligate anaerobes, and microaerophiles. Learn about the growth requirements and energy generation mechanisms of different types of organisms.
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