15 Top CLOSTRIDIUM Questions and Answers

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1. Which of the following types of Clostridium perfringens produces alpha toxin most abundantly?
A. Type A
B. Type B
C. Type C
D. Type D
Answer: A
2. Which of the following is predominantly proteolytic?
A. C. sporogenes
B. C. histolyticum
C. Both (a) and (b)
D. C. speticum
Answer: C
3. Which of the following properties are the characteristics of tetanospasmin?
A. It is a heat-labile protein
B. It is a neurotoxin
C. It can be toxoided
D. All of these
Answer: D
4. Types of exotoxin, most commonly associated with botulism in man, is/are?
A. Type A
B. Type B
C. Type E
D. All of these
Answer: D
5. Nagler’s reaction is useful for the identification of
A. C tetani
B. C perfringens
C. C botulinum
D. C difficile
Answer: B
6. The most toxic exotoxin is
A. tetanus toxin
B. diphtheria toxin
C. botulinum toxin
D. cholera toxin
Answer: C
7. Which of the following species of Clostridium is predominantly sacchrolytic?
A. C septicum
B. C perfringens
C. C novyi
D. All of these
Answer: D
8. Stormy clot reaction is useful in identification of
A. C tetani
B. C botulinum
C. C perfringens
D. C difficile
Answer: C
9. Food poisoning strains of Clostridium perfringens belong to
A. type A
B. type B
C. type C
D. type D
Answer: A
10. Reddening of meat in cooked meat broth is produced by
A. C tetani
B. C histolyticum
C. Clostridium perfringens
D. C sporogenes
Answer: C
CLOSTRIDIUM Questions and Answers ::
11. Clostridium botulinum food poisoning is due to
A. invasion of bacteria in the intestine
B. preformed toxin
C. both (a) and (b)
D. none of the above
Answer: B
12. Drumstick appearance is characteristic of
A. C tetanomorphum
B. C tetani
C. C sphenoides
D. all of these
Answer: D
13. Blackening of meat in cooked meat broth is through
A. C histolyticum
B. C perfringens
C. C tetani
D. all of these
Answer: A
14. Typical drumstick appearance of bacilli is generally seen in
A. C perfringens
B. C botulinum
C. C tetani
D. C histolyticum
Answer: C
15. Which of the following(s) is/are obligate anaeorbes?
A. C septicum
B. C novyi
C. C tetani
D. All of these
Answer: D


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