Which of the following best describes an organism that can survive with or without oxygen? A) Photoautotrophs B) Obligate aerobes C) Facultative anaerobes D) Obligate anaerobes
Understand the Problem
The question is asking which option correctly describes an organism capable of surviving in both aerobic and anaerobic conditions. This requires an understanding of the different classifications of organisms based on their oxygen requirements.
Answer
Facultative anaerobes.
The organism that can survive with or without oxygen is a facultative anaerobe.
Answer for screen readers
The organism that can survive with or without oxygen is a facultative anaerobe.
More Information
Facultative anaerobes are versatile organisms that can live and grow with or without oxygen. They are capable of aerobic respiration when oxygen is present and can switch to anaerobic respiration or fermentation when it is absent.
Tips
A common mistake is confusing facultative anaerobes with obligate anaerobes or aerobes. Remember, obligate aerobes need oxygen and obligate anaerobes cannot tolerate it.
Sources
- Facultative anaerobic organism - Wikipedia - en.wikipedia.org
- 9.2: Oxygen Requirements for Microbial Growth - Biology LibreTexts - bio.libretexts.org
- Aerobe - an overview | ScienceDirect Topics - sciencedirect.com
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