Name an obligate anaerobe.

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Prepare for your Microbial Growth Phases, Oxygen Needs, and Immunity Types Test. Use our multiple-choice questions and detailed explanations for each answer to enhance your understanding and ensure success!

Multiple Choice

Name an obligate anaerobe.

Explanation:
Obligate anaerobes must grow in environments without oxygen, because oxygen is toxic to them and they lack the protective enzymes needed to detoxify reactive oxygen species. They rely on anaerobic metabolism, such as fermentation, to generate energy. Clostridium species are classic obligate anaerobes; they thrive only in the absence of oxygen and include pathogens like Clostridium tetani. The other organisms listed can grow with or without oxygen: Escherichia coli and Staphylococcus aureus are facultative anaerobes, and Saccharomyces cerevisiae can grow aerobically or anaerobically.

Obligate anaerobes must grow in environments without oxygen, because oxygen is toxic to them and they lack the protective enzymes needed to detoxify reactive oxygen species. They rely on anaerobic metabolism, such as fermentation, to generate energy. Clostridium species are classic obligate anaerobes; they thrive only in the absence of oxygen and include pathogens like Clostridium tetani. The other organisms listed can grow with or without oxygen: Escherichia coli and Staphylococcus aureus are facultative anaerobes, and Saccharomyces cerevisiae can grow aerobically or anaerobically.

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