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Questions and Answers
Which type of bacteria are pseudomonads?
What distinguishes pseudomonads from members of the Enterobacteriaceae?
What is the significance of pseudomonads not fermenting glucose?
What favors the persistence of pseudomonads in the hospital environment?
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What pigments are produced by Pseudomonas aeruginosa?
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Study Notes
Pseudomonads
- Pseudomonads are a type of Gram-negative, aerobic bacteria.
Distinction from Enterobacteriaceae
- Pseudomonads are distinguished from members of the Enterobacteriaceae family by their ability to oxidize carbohydrates rather than ferment them.
Glucose Non-Fermentation
- Pseudomonads do not ferment glucose, which signifies their ability to thrive in environments with limited nutrients.
- This characteristic is significant because it allows pseudomonads to persist in environments where other bacteria may not survive.
Persistence in Hospital Environment
- The persistence of pseudomonads in the hospital environment is favored by the presence of moist environments, such as sinks and humidifiers, and the use of broad-spectrum antibiotics.
Pseudomonas aeruginosa Pigments
- Pseudomonas aeruginosa produces two pigments: pyocyanin (blue-green) and pyoverdin (yellow-green).
- These pigments contribute to the bacterium's ability to colonize and cause infection in the human body.
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Description
Learn about the pathogenic species of Pseudomonas in medical microbiology and their characteristics such as being gram-negative rods and strict aerobes. Explore the differences between Pseudomonas and Enterobacteriaceae.
