The flattened adjacent sides of the cellular appearance of which microorganism resemble kidney beans?

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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

The flattened adjacent sides of the cellular appearance of which microorganism resemble kidney beans?

Explanation:
Neisseria species form Gram-negative diplococci with flattened adjacent sides, giving a kidney-bean appearance. This paired, bean-like shape is a classic clue for Neisseria, especially seen in specimens from gonorrhea where Gram-negative intracellular diplococci are often observed inside neutrophils. The other organisms listed are not diplococci with this flattened, kidney-bean morphology—Aeromonas hydrophila is a rod, Campylobacter jejuni is a curved rod, and Pasteurella multocida is a small coccobacillus. Thus, the description best matches Neisseria gonorrhoeae.

Neisseria species form Gram-negative diplococci with flattened adjacent sides, giving a kidney-bean appearance. This paired, bean-like shape is a classic clue for Neisseria, especially seen in specimens from gonorrhea where Gram-negative intracellular diplococci are often observed inside neutrophils. The other organisms listed are not diplococci with this flattened, kidney-bean morphology—Aeromonas hydrophila is a rod, Campylobacter jejuni is a curved rod, and Pasteurella multocida is a small coccobacillus. Thus, the description best matches Neisseria gonorrhoeae.

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