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