Which organism is a Gram-negative bacillus that is bile sensitive?

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Multiple Choice

Which organism is a Gram-negative bacillus that is bile sensitive?

The trait here combines Gram reaction, shape, and how the organism responds to bile in culture. Fusobacterium are slender, Gram-negative, non-spore-forming anaerobic bacilli commonly found in the oral region. In culture, these anaerobes are inhibited by bile, so they are bile sensitive. In contrast, other Gram-negative rods like E. coli and Hafnia alvei typically tolerate bile and grow in bile-containing media, and Propionibacterium acnes is a Gram-positive rod, not Gram-negative. So Fusobacterium best fits as a Gram-negative bacillus that is bile sensitive.

The trait here combines Gram reaction, shape, and how the organism responds to bile in culture. Fusobacterium are slender, Gram-negative, non-spore-forming anaerobic bacilli commonly found in the oral region. In culture, these anaerobes are inhibited by bile, so they are bile sensitive. In contrast, other Gram-negative rods like E. coli and Hafnia alvei typically tolerate bile and grow in bile-containing media, and Propionibacterium acnes is a Gram-positive rod, not Gram-negative. So Fusobacterium best fits as a Gram-negative bacillus that is bile sensitive.

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