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MCQs

Total Questions : 31 | Page 1 of 4 pages
Question 1. The bacteria which is novobiocin resistant is
  1.    Staphylococcus aureus
  2.    S saprophyticus
  3.    None of these
  4.    S epidermidis
 Discuss Question
Answer: Option B. -> S saprophyticus
Question 2. The genus/genera that belongs to the family Micrococcaceae is
  1.    Staphylococcus
  2.    Planococcus
  3.    All of these
  4.    Micrococcus
 Discuss Question
Answer: Option C. -> All of these
Question 3. Which of the following Staphylococcal haemolysins does not possess leucocidal activity?
  1.    γ haemolysin
  2.    δ haemolysin
  3.    β haemolysin
  4.    α haemolysin
 Discuss Question
Answer: Option C. -> β haemolysin
Question 4. Identify the bacteria which is oxidase-negative and catalase-positive?
  1.    Staphylococcus
  2.    Neisseria
  3.    Pseudomonas
  4.    Streptococcus
 Discuss Question
Answer: Option A. -> Staphylococcus
Question 5. The bacteria which are inhibited on crystal violet (1:500,000) blood agar, is/are
  1.    Streptococci
  2.    Both (a) and (b)
  3.    None of these
  4.    Staphylococci
 Discuss Question
Answer: Option D. -> Staphylococci
Question 6. Coagulase-reacting factor is necessary for
  1.    slide coagulase test
  2.    tube coagulase test
  3.    precipitation test
  4.    none of these
 Discuss Question
Answer: Option B. -> tube coagulase test
Question 7. The toxin of Staphylococcus aureus that may result into scalded skin syndrome is
  1.    Epidermolytic toxin
  2.    Leucocidin
  3.    Haemolysin
  4.    Enterotoxin
 Discuss Question
Answer: Option A. -> Epidermolytic toxin
Question 8. Bacteria which produces coagulase is
  1.    S hominis
  2.    S saprophyticus
  3.    S epidermidis
  4.    S aureus
 Discuss Question
Answer: Option D. -> S aureus
Question 9. Which of the following Staphylococcal haemolysins does not cause lysis of human RBCs?
  1.    γ haemolysin
  2.    β haemolysin
  3.    α haemolysin
  4.    δ haemolysin
 Discuss Question
Answer: Option C. -> α haemolysin
Question 10. Staphylococcal food poisoning usually manifests itself following ingestion of contaminated food after
  1.    8-12 hours
  2.    18-36 hours
  3.    12-18 hours
  4.    2-6 hours
 Discuss Question
Answer: Option D. -> 2-6 hours

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