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MCQs

Total Questions : 348 | Page 2 of 35 pages
Question 11. Lactobacilli grow best under
  1.    strict anaerobic conditions
  2.    microaerophilic conditions in presence of 5% CO2 and PH6
  3.    microaerophilic conditions in presence of 3% CO2 and PH5
  4.    microaerophilic conditions in presence of 2% CO2 and PH4
 Discuss Question
Answer: Option B. -> microaerophilic conditions in presence of 5% CO2 and PH6
Answer: (b).microaerophilic conditions in presence of 5% CO2 and PH6
Question 12. Which of the following genera is included in the family Bacteroi-daceae?
  1.    Bacteroides
  2.    Fusobacterium
  3.    Leptotrichia
  4.    All of these
 Discuss Question
Answer: Option D. -> All of these
Answer: (d).All of these
Question 13. The current genus name of a saccharolytic group of Bacteroides is
  1.    Porphyromonas
  2.    Bacteroides
  3.    Prevotella
  4.    None of these
 Discuss Question
Answer: Option A. -> Porphyromonas
Answer: (a).Porphyromonas
Question 14. Colonies resembling molar teeth are produced by
  1.    Nocardia brasiliensis
  2.    N. asteroids
  3.    Actinomyces israelii
  4.    Actinomadura madurae
 Discuss Question
Answer: Option C. -> Actinomyces israelii
Answer: (c).Actinomyces israelii
Question 15. The bacteria which is predominant flora of the human gut is
  1.    Escherichia coli
  2.    Clostridium perfringens
  3.    Bacteroides
  4.    Actinomyces
 Discuss Question
Answer: Option B. -> Clostridium perfringens
Answer: (b).Clostridium perfringens
Question 16. Which of the following bacterial colonies fluoresce brick-red in UV light?
  1.    B gingivalis
  2.    B melaninogenicus
  3.    Bacteroides fragilis
  4.    B levii
 Discuss Question
Answer: Option B. -> B melaninogenicus
Answer: (b).B melaninogenicus
Question 17. Which of the following bacteria is acid-fast?
  1.    Actinomyces
  2.    Nocardia
  3.    Streptomyces
  4.    Corynebacterium
 Discuss Question
Answer: Option B. -> Nocardia
Answer: (b).Nocardia
Question 18. Lactobacilli constitute the normal flora of
  1.    prepubertal vagina
  2.    adult vagina
  3.    post-menopausal vagina
  4.    none of these
 Discuss Question
Answer: Option B. -> adult vagina
Answer: (b).adult vagina
Question 19. The commonest species of Bacteroides in fragilis group, which causes human infection, is
  1.    B vulgatus
  2.    B fragilis
  3.    B ovatus
  4.    B merdae
 Discuss Question
Answer: Option B. -> B fragilis
Answer: (b).B fragilis
Question 20. Which of the following bacteria is gram-negative cocci?
  1.    Veillonella
  2.    Peptococcus
  3.    Peptostreptococcus
  4.    Sporosarcina
 Discuss Question
Answer: Option A. -> Veillonella
Answer: (a).Veillonella

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