Bacillus(Microbiology ) Questions and Answers

Question 1. The bacteria, used to examine the efficacy of autoclave, is
  1.    Bacillus stearothermophilus
  2.    B polymyxa
  3.    B brevis
  4.    B megaterium
Explanation:-
Answer: Option A. -> Bacillus stearothermophilus
Question 2. The test(s) which can be used to differentiate anthrax bacilli from anthracoid bacilli is/are
  1.    presence of capsule
  2.    all of these
  3.    presence of medusa-head colony
  4.    susceptibility to gamma phage
Explanation:-
Answer: Option B. -> all of these
Question 3. McFadyean's reaction is employed for the presumptive diagnosis of
  1.    all of these
  2.    tetanus
  3.    anthrax
  4.    typhoid
Explanation:-
Answer: Option C. -> anthrax
Question 4. Antibodies to which of the following antigens of Bacillus anthracis are protective?
  1.    None of these
  2.    Capsular polypeptide
  3.    Somatic polysaccharide
  4.    Anthrax toxin
Explanation:-
Answer: Option D. -> Anthrax toxin
Question 5. Medusa head appearance of the colonies may be due to
  1.    Pseudomonas aeruginosa
  2.    Proteus mirabilis
  3.    Clostridium tetani
  4.    Bacillus anthracis
Explanation:-
Answer: Option D. -> Bacillus anthracis
Question 6. Food most often associated with emetic type of food poisoning caused by Bacillus cereus, is
  1.    Milk
  2.    Eggs
  3.    Meat
  4.    Rice
Explanation:-
Answer: Option D. -> Rice
Question 7. Koch's postulates were satisfied for the first time with
  1.    Clostridium tetani
  2.    Corynebacterium diphtheriae
  3.    Salmonella typhi
  4.    Bacillus anthracis
Explanation:-
Answer: Option D. -> Bacillus anthracis
Question 8. Ascoli's thermoprecipition test helps in confirming the laboratory diagnosis of
  1.    typhoid
  2.    anthrax
  3.    tetanus
  4.    cholera
Explanation:-
Answer: Option B. -> anthrax
Question 9.  McFadyean's reaction is employed for the presumptive diagnosis of
  1.    anthrax
  2.    tetanus
  3.    typhoid
  4.    all of these
Explanation:-
Answer: Option A. -> anthrax
Question 10.  Antibodies to which of the following antigens of Bacillus anthracis are protective?
  1.    Capsular polypeptide
  2.    Somatic polysaccharide
  3.    Anthrax toxin
  4.    None of these
Explanation:-
Answer: Option C. -> Anthrax toxin
© Lakshya_Education.com, All Right Reserved.
Contact Us services