Aeromonas And Plesiomonas(Microbiology > Vibrio ) Questions and Answers

Question 1. Which of the following bacteria is associated with food poisoning due to consumption of sea fish?
  1.    Vibrio parahaemolyticus
  2.    All of these
  3.    V alginolyticus
  4.    V vulnificus
Explanation:-
Answer: Option A. -> Vibrio parahaemolyticus
Question 2. Which of the following conditions can be caused by Plesiomonas?
  1.    Gastroenteritis
  2.    All of these
  3.    Septicaemia
  4.    Cellulites
Explanation:-
Answer: Option B. -> All of these
Question 3. Which of the followings can be used to differentiate between classical and El Tor biotypes of Vibrio cholerae?
  1.    Agglutination of fowl RBCs
  2.    All of these
  3.    Sensitivity to polymyxin B
  4.    Sensitivity to Mukerjee's group IV phage
Explanation:-
Answer: Option B. -> All of these
Question 4. Which of the following biotypes of Vibrio cholerae are prevalent in India?
  1.    Classical
  2.    None of these
  3.    EI Tor
  4.    Both (a) and (b)
Explanation:-
Answer: Option C. -> EI Tor
Question 5. Which of the following medium are used to differentiate the colonies of Vibrio cholerae and V parahaemolyticus?
  1.    MacConkey
  2.    Thiosulphate-citrate-bile-sucrose
  3.    Alkaline bile salt
  4.    All of these
Explanation:-
Answer: Option B. -> Thiosulphate-citrate-bile-sucrose
Question 6. Which of the following does not cause wound infection following exposure to sea water or infected shellfish?
  1.    Vibrio vulnificus
  2.    V. cholerae
  3.    V. alginolyticus
  4.    Aeromonas
Explanation:-
Answer: Option B. -> V. cholerae
Question 7. Acute diarrhoeal disease resembling cholera can be caused due to
  1.    Vibrio vulnificus
  2.    Aeromonas hydrophila
  3.    All of these
  4.    V. alginolyticus
Explanation:-
Answer: Option B. -> Aeromonas hydrophila
Question 8. The test(s) used for the assay of cholera toxin is/are
  1.    All of these
  2.    Radioimmunoassay
  3.    Enzyme-linked immunosorbent assay
  4.    Morphological changes in Chinese hamster ovary cells
Explanation:-
Answer: Option A. -> All of these
Question 9. The transport medium for Vibrio cholerae can be
  1.    Selenite F broth
  2.    Venkatraman-Ramakrishnan medium
  3.    Tetrathionate broth
  4.    Nutrient broth
Explanation:-
Answer: Option B. -> Venkatraman-Ramakrishnan medium
Question 10. The DNA coding for the production of cholera toxin in Vibrio cholerae is on the
  1.    plasmid
  2.    chromosome
  3.    phage
  4.    transposon
Explanation:-
Answer: Option B. -> chromosome
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