Explore topic-wise MCQs in Microbiology.

This section includes 18 Mcqs, each offering curated multiple-choice questions to sharpen your Microbiology knowledge and support exam preparation. Choose a topic below to get started.

1.

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» C. both (a) and (b)
Discussion
2.

Which of the following types of produces alpha toxin most abundantly?

A. Type A
B. Type B
C. Type C
D. Type D
Answer» B. Type B
Discussion
3.

Food poisoning strains of belong to

A. type A
B. type B
C. type C
D. type D
Answer» B. type B
Discussion
4.

The most toxic exotoxin is
A. tetanus toxin
B. diphtheria toxin
C. botulinum toxin
D. cholera toxin
Answer» D. cholera toxin
Discussion
5.

Stormy clot reaction is useful in identification of
A. <i>C tetani</i>
B. <i>C botulinum</i>
C. <i>C perfringens</i>
D. <i>C difficile</i>
Answer» D. <i>C difficile</i>
Discussion
6.

Food poisoning strains of Clostridium perfringens belong to
A. type A
B. type B
C. type C
D. type D
Answer» B. type B
Discussion
7.

Reddening of meat in cooked meat broth is produced by
A. <i>C tetani</i>
B. <i>C histolyticum</i>
C. <i>Clostridium perfringens</i>
D. <i>C sporogenes</i>
Answer» D. <i>C sporogenes</i>
Discussion
8.

Blackening of meat in cooked meat broth is through
A. <i>C histolyticum</i>
B. <i>C perfringens</i>
C. <i>C tetani</i>
D. all of these
Answer» B. <i>C perfringens</i>
Discussion
9.

Which of the following(s) is/are obligate anaeorbes?
A. <i> C septicum</i>
B. <i>C novyi</i>
C. <i>C tetani</i>
D. All of these
Answer» E.
Discussion
10.

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» C. both (a) and (b)
Discussion
11.

Drumstick appearance is characteristic of
A. <i>C tetanomorphum</i>
B. <i>C tetani</i>
C. <i>C sphenoides</i>
D. all of these
Answer» E.
Discussion
12.

Typical drumstick appearance of bacilli is generally seen in
A. <i>C perfringens</i>
B. <i>C botulinum</i>
C. <i>C tetani</i>
D. <i>C histolyticum</i>
Answer» D. <i>C histolyticum</i>
Discussion
13.

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» B. Type B
Discussion
14.

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» E.
Discussion
15.

Which of the following is predominantly proteolytic?
A. <i>C. sporogenes</i>
B. <i>C. histolyticum</i>
C. Both (a) and (b)
D. <i>C. speticum</i>
Answer» D. <i>C. speticum</i>
Discussion
16.

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» E.
Discussion
17.

Nagler's reaction is useful for the identification of
A. <i>C tetani</i>
B. <i>C perfringens</i>
C. <i>C botulinum</i>
D. <i>C difficile</i>
Answer» C. <i>C botulinum</i>
Discussion
18.

Which of the following species of Clostridium is predominantly sacchrolytic?
A. <i>C septicum</i>
B. <i>C perfringens</i>
C. <i>C novyi</i>
D. All of these
Answer» E.
Discussion