actinomycetes-and-non-sporing-anaerobes microbiology question and answers -Page first

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Actinomycetes and Non Sporing Anaerobes problems

1. Lactobacilli constitute the normal flora of
Options
A. prepubertal vagina
B. adult vagina
C. post-menopausal vagina
D. none of these

Discuss

Correct Answer: adult vagina

2. The commonest bacterial cause of cervicofacial actinomycosis is
Options
A. A. naeslundii
B. A. viscosus
C. A. israelii
D. A. meyeri

Discuss

Correct Answer: A. israelii

3. The bacteria which is predominant flora of the human gut is
Options
A. Escherichia coli
B. Clostridium perfringens
C. Bacteroides
D. Actinomyces

Discuss

Correct Answer: Clostridium perfringens

4. Which of the following bacteria is moderately saccharolytic?
Options
A. Bacteriodes fragilis
B. B gingivalis
C. B melaninogenicus
D. B levii

Discuss

Correct Answer: B melaninogenicus

5. Which of the following bacteria is acid-fast?
Options
A. Actinomyces
B. Nocardia
C. Streptomyces
D. Corynebacterium

Discuss

Correct Answer: Nocardia

6. Which of the following genera is included in the family Bacteroi-daceae?
Options
A. Bacteroides
B. Fusobacterium
C. Leptotrichia
D. All of these

Discuss

Correct Answer: All of these

7. The current genus name of a saccharolytic group of Bacteroides is
Options
A. Porphyromonas
B. Bacteroides
C. Prevotella
D. None of these

Discuss

Correct Answer: Porphyromonas

8. Colonies resembling molar teeth are produced by
Options
A. Nocardia brasiliensis
B. N. asteroids
C. Actinomyces israelii
D. Actinomadura madurae

Discuss

Correct Answer: Actinomyces israelii

9. Which of the following bacterial colonies fluoresce brick-red in UV light?
Options
A. B gingivalis
B. B melaninogenicus
C. Bacteroides fragilis
D. B levii

Discuss

Correct Answer: B melaninogenicus

10. Lactobacilli grow best under
Options
A. strict anaerobic conditions
B. microaerophilic conditions in presence of 5% CO₂ and PH6
C. microaerophilic conditions in presence of 3% CO₂ and PH5
D. microaerophilic conditions in presence of 2% CO₂ and PH4

Discuss

Correct Answer: microaerophilic conditions in presence of 5% CO₂ and PH6

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