26 Questions
Which of the following Vibrio species is a lactose fermenter?
V. cholerae
Which Vibrio species is capable of growth on MacConkey agar and is oxidase positive?
V. cholerae
Which Vibrio species is non-halophilic and alkalinophilic?
V. alginolyticus
What is the result of the string test for VIBRIO species?
String formation (+)
Which Vibrio species is associated with causing cholera and producing rice watery stool?
V. cholerae
Which Vibrio species forms smooth and yellow colonies on Thiosulfate–citrate–bile salts–sucrose agar after 24 hours?
V. cholerae
Which of the following characteristics is associated with Vibrio cholerae O1 serotype?
Anuria
What is the temperature range in which Pseudomonas aeruginosa can grow?
35C to 37C and 42C
What is the primary pigment associated with Pseudomonas aeruginosa?
Pyocyacin
Which species is commonly found in contaminated water and seafood, and causes gastroenteritis?
Vibrio parahaemolyticus
What is the disease associated with Vibrio mimicus?
Wound, cellulitis gastroenteritis and bacteremia
Which biochemical tests are positive for Pseudomonas aeruginosa?
Oxidase, nitrate reduction, acetamide, citrate
Which Vibrio species is halophilic and causes wound and ear infection?
Vibrio fluvialis
Which of the following characteristics is associated with Aeromonas hydrophila?
Motile and produces blue-green pus (Skin lesion)
'Hot tub/ jacuzzi folliculitis' is associated with which bacterial species?
Pseudomonas aeruginosa
'Anuria' is a symptom associated with which of the following bacterial species?
'Symptoms: severe dehydration, loss of fluids and electrolytes'
Which bacterial species is associated with severe dehydration, loss of fluids and electrolytes, severe muscle cramping, and anuria?
Vibrio cholerae O1
Which bacterial species is non-halophilic and capable of causing wound and ear infection?
Aeromonas hydrophila
Which bacterial species is known as the 'agent of blue-green pus' and is associated with causing ventilator-associated pneumonia?
Pseudomonas aeruginosa
Which Vibrio species is capable of growth on MacConkey agar and is oxidase positive?
Vibrio parahaemolyticus
Which bacterial species is known to produce the pigment Pyocyanin and is commonly associated with causing swimmer's ear?
Pseudomonas aeruginosa
Which Vibrio species forms smooth and yellow colonies on Thiosulfate–citrate–bile salts–sucrose agar after 24 hours?
Vibrio parahaemolyticus
Which Vibrio species is a lactose fermenter and is commonly found in contaminated water and seafood, causing gastroenteritis?
Vibrio parahaemolyticus
Which characteristic is associated with Aeromonas hydrophila?
Non-halophilic
'Obligate aerobe' and 'grapelike or corn tortilla odor' are characteristics associated with which bacterial species?
Pseudomonas aeruginosa
Which bacterial species is known to cause 'malignant otitis externa' or 'swimmer's ear' and is a contaminant in contact lens care solution?
Pseudomonas aeruginosa
Study Notes
Vibrio Species Characteristics
- Vibrio parahaemolyticus is a lactose fermenter.
- Vibrio vulnificus is capable of growth on MacConkey agar and is oxidase positive.
- Vibrio alginolyticus is non-halophilic and alkalinophilic.
Vibrio cholerae Characteristics
- Vibrio cholerae causes cholera and produces rice watery stool.
- Vibrio cholerae O1 serotype is associated with a mucoid, agglutination (cholera red) reaction.
- Vibrio cholerae forms smooth and yellow colonies on Thiosulfate–citrate–bile salts–sucrose agar after 24 hours.
- A string test for Vibrio species is positive, indicating the presence of an agglutinin.
Pseudomonas aeruginosa Characteristics
- Pseudomonas aeruginosa can grow in a temperature range of 25-42°C.
- Pseudomonas aeruginosa produces a blue-green pigment called pyocyanin.
- Pseudomonas aeruginosa causes ventilator-associated pneumonia and is known as the 'agent of blue-green pus'.
- Pseudomonas aeruginosa produces pyocyanin and is commonly associated with causing swimmer's ear.
Other Bacterial Species Characteristics
- Aeromonas hydrophila is non-halophilic and capable of causing wound and ear infection.
- Aeromonas hydrophila is an obligatory aerobe and has a grapelike or corn tortilla odor.
- Vibrio mimicus causes gastroenteritis and is commonly found in contaminated water and seafood.
- Vibrio vulnificus is halophilic and causes wound and ear infection.
- Pseudomonas aeruginosa is associated with 'hot tub/jacuzzi folliculitis'.
- Vibrio cholerae causes severe dehydration, loss of fluids and electrolytes, severe muscle cramping, and anuria.
Test your knowledge of Vibrio bacteria characteristics in clinical bacteriology. This quiz covers lactose fermenter, sucrose fermenter, general characteristics, biochemical tests, and source culture media of Vibrio cholerae and related species.
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