bacte lec - Vibrio and other gram negative bacilli (Klebsiella)

Friedländer’s bacillus

Klebsiella pneumoniae is also known as:

Gram-negative coccobacilli or diplobacilli

Klebsiella pneumoniae is described as:

Large polysaccharide capsule

What feature of Klebsiella pneumoniae makes its colonies appear mucoid?

Citrate utilization

Which biochemical test is positive for Klebsiella pneumoniae?

Capsule

What is the primary virulence factor of Klebsiella pneumoniae that suppresses phagocytosis?

Lobar pneumonia

What disease is most commonly associated with Klebsiella pneumoniae?

Rhinoscleroma

Klebsiella rhinoscleromatis causes:

Primary atrophic rhinitis

Klebsiella ozaenae is associated with:

Enterobacter aerogenes and Enterobacter cloacae

What are the two most important species of Enterobacter?

Acid slant / Acid butt, without gas, without H2S

What is the biochemical reaction for Enterobacter in Triple Sugar Iron (TSI) agar?

Fish-eye colonies

What type of colonies does Enterobacter form on *Eosin Methylene Blue (EMB) agar?

Serratia marcescens

The most common species of Serratia associated with infections is:

Prodigiosin

Serratia marcescens produces a red pigment called:

A wide range of antimicrobials

Serratia marcescens is known for its resistance to:

Septic arthritis

Serratia marcescens is associated with:

Produces hydrogen sulfide (H2S)

What distinguishes Citrobacter freundii* from other lactose fermenters?

Rose-pink

Citrobacter freundii colonies on MacConkey agar appear:

Peritrichous flagella

Proteus mirabilis is highly motile due to its:

Swarming colonies

Proteus species exhibit what characteristic growth on agar plates?

Urease

What enzyme is used to differentiate Proteus species from other Gram-negative bacilli?

Proteus vulgaris

Which Proteus species is indole-positive?

Struvite kidney stones

What condition is associated with Proteus mirabilis due to its urease activity?

String test

What test is used for detecting capsular serotyping in Klebsiella pneumoniae?

roduces hydrogen sulfide (H2S)

Citrobacter freundii is unique among lactose fermenters because it:

DNAse

Which of the following enzymes is produced by Serratia marcescens?