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Bacillus MCQ Questions & Answers

Bacillus MCQs : This section focuses on the "Bacillus". These Multiple Choice Questions (MCQs) should be practiced to improve the Bacillus skills required for various interviews (campus interview, walk-in interview, company interview), placement, entrance exam and other competitive examinations.




Question 1

Food most often associated with emetic type of food poisoning caused by Bacillus cereus, is

A. Meat
B. Rice
C. Milk
D. Eggs

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Question 2

McFadyean's reaction is employed for the presumptive diagnosis of

A. anthrax
B. tetanus
C. typhoid
D. All of the above

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Question 3

Koch's postulates were satisfied for the first time with

A. Clostridium tetani
B. Corynebacterium diphtheriae
C. Bacillus anthracis
D. Salmonella typhi

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Question 4

Antibodies to which of the following antigens of Bacillus anthracis are protective?

A. Capsular polypeptide
B. Somatic polysaccharide
C. Anthrax toxin
D. None of these

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Question 5

What is the best way to prevent B. cereus food poisoning?

A. Storing food at the proper temperature.
B. Throwing out food that has been left at room temperature for too long
C. Heating properly-stored leftovers enough to kill B. cereus bacteria
D. All of these are ways to prevent B. cereus food poisoning

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Question 6

The test(s) which can be used to differentiate anthrax bacilli from anthracoid bacilli is/are

A. presence of medusa-head colony
B. presence of capsule
C. susceptibility to gamma phage
D. all of these

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Question 7

The test(s) which can be used to differentiate anthrax bacilli from anthracoid bacilli is/are

A. presence of medusa-head colony
B. presence of capsule
C. susceptibility to gamma phage
D. All of the above

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Question 8

Medusa head appearance of the colonies may be due to

A. Bacillus anthracis
B. Proteus mirabilis
C. Clostridium tetani
D. Pseudomonas aeruginosa

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Question 9

The bacteria, used to examine the efficacy of autoclave, is

A. B polymyxa
B. B brevis
C. Bacillus stearothermophilus
D. B megaterium

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Question 10

Ascoli's thermoprecipition test helps in confirming the laboratory diagnosis of

A. tetanus
B. anthrax
C. typhoid
D. cholera

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Question 11

McFadyean's reaction is employed for the presumptive diagnosis of

A. anthrax
B. tetanus
C. typhoid
D. all of these

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Question 12

What does B. cereus produce that causes symptoms associated with food poisoning, such as vomiting and diarrhea?

A. Toxins
B. Poisons
C. Endospores
D. Bacteria

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