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
7. Which of the following bacteria is acid-fast?
A. Actinomyces
B. Nocardia
C. Streptomyces
D. Corynebacterium
8. Lactobacilli constitute the normal flora of
A. prepubertal vagina
B. adult vagina
C. post-menopausal vagina
D. none of these
9. Which of the following bacteria is gram-negative cocci?
A. Veillonella
B. Peptococcus
C. Peptostreptococcus
D. Sporosarcina
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