10 Questions
Which pigment produced by P. aeruginosa can color the pus in a wound blue?
Pyocyanin
What distinguishes pseudomonads from the members of the Enterobacteriaceae?
They are strict aerobes
Which of the following best describes the gram staining of Pseudomonads?
Gram-negative rods
What favors the persistence of pseudomonads in the hospital environment?
Low nutrient environment
What accounts for the remarkable ability of P. aeruginosa to withstand disinfectants?
Production of pigments
Which of the following is a distinguishing characteristic of Pseudomonads compared to Enterobacteriaceae?
Ability to grow in water with minimal nutrients
What is the clinical significance of pyocyanin produced by P. aeruginosa?
It causes yellow-green pigmentation in the pus
Which virulence factor of P. aeruginosa contributes to its resistance to disinfectants?
Pyoverdin production
What aspect of the morphology of Pseudomonads distinguishes them from Enterobacteriaceae?
Presence of pili (fimbriae)
Which pigment produced by P. aeruginosa fluoresces under ultraviolet light?
Pyoverdin
Test your knowledge about Pseudomonas and Proteus infections with this quiz. Identify morphological and cultural characteristics, virulence factors, clinical findings, and diagnostic laboratory tests associated with these infections.
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