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Pseudomonas and Proteus Infections Quiz

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Questions and Answers

Which pigment produced by P. aeruginosa can color the pus in a wound blue?

Pyorubin

Pyoverdin

Fluorescein

Pyocyanin (correct)

What distinguishes pseudomonads from the members of the Enterobacteriaceae?

They are strict aerobes (correct)

They are strict anaerobes

They ferment glucose

They are facultative anaerobes

Which of the following best describes the gram staining of Pseudomonads?

Gram-positive cocci

Gram-negative rods (correct)

Gram-negative cocci

Gram-positive rods

What favors the persistence of pseudomonads in the hospital environment?

Low nutrient environment Signup and view all the answers

What accounts for the remarkable ability of P. aeruginosa to withstand disinfectants?

Production of pigments Signup and view all the answers

Which of the following is a distinguishing characteristic of Pseudomonads compared to Enterobacteriaceae?

Ability to grow in water with minimal nutrients Signup and view all the answers

What is the clinical significance of pyocyanin produced by P. aeruginosa?

It causes yellow-green pigmentation in the pus Signup and view all the answers

Which virulence factor of P. aeruginosa contributes to its resistance to disinfectants?

Pyoverdin production Signup and view all the answers

What aspect of the morphology of Pseudomonads distinguishes them from Enterobacteriaceae?

Presence of pili (fimbriae) Signup and view all the answers

Which pigment produced by P. aeruginosa fluoresces under ultraviolet light?

Pyoverdin Signup and view all the answers