Which organism is a gram-positive anaerobic coccus?

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Prepare for the Clinical Laboratory Science Bacteriology Test. Engage with multiple choice questions and flashcards with helpful hints and explanations. Ace your exam confidently!

Multiple Choice

Which organism is a gram-positive anaerobic coccus?

Explanation:
A gram-positive anaerobic coccus is a spherical bacterium that stains purple and grows without oxygen. Peptostreptococcus anaerobius fits this description exactly, being a gram-positive coccus that thrives in anaerobic conditions. It is commonly part of the body's normal flora and is frequently involved in polymicrobial anaerobic infections. The other organisms listed do not match: Bacteroides urealyticus is a gram-negative rod; Eubacterium lentum (Eggerthella lenta) is a gram-positive rod; Propionibacterium acnes is also a gram-positive rod.

A gram-positive anaerobic coccus is a spherical bacterium that stains purple and grows without oxygen. Peptostreptococcus anaerobius fits this description exactly, being a gram-positive coccus that thrives in anaerobic conditions. It is commonly part of the body's normal flora and is frequently involved in polymicrobial anaerobic infections. The other organisms listed do not match: Bacteroides urealyticus is a gram-negative rod; Eubacterium lentum (Eggerthella lenta) is a gram-positive rod; Propionibacterium acnes is also a gram-positive rod.

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