6. Which of the following bacterial colonies fluoresce brick-red in UV light?

A. B gingivalis
B. B melaninogenicus
C. Bacteroides fragilis
D. B levii

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7. Which of the following bacteria is acid-fast?

A. Actinomyces
B. Nocardia
C. Streptomyces
D. Corynebacterium

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8. Lactobacilli constitute the normal flora of

A. prepubertal vagina
B. adult vagina
C. post-menopausal vagina
D. none of these

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9. Which of the following bacteria is gram-negative cocci?

A. Veillonella
B. Peptococcus
C. Peptostreptococcus
D. Sporosarcina

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10. The commonest species of Bacteroides in fragilis group, which causes human infection, is

A. B vulgatus
B. B fragilis
C. B ovatus
D. B merdae

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