MCQOPTIONS
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MCQOPTIONS
This section includes 11 Mcqs, each offering curated multiple-choice questions to sharpen your Microbiology knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Which of the following bacterial colonies fluoresce brick-red in UV light? |
| A. | <i>B gingivalis</i> |
| B. | <i>B melaninogenicus</i> |
| C. | <i>Bacteroides fragilis</i> |
| D. | <i>B levii</i> |
| Answer» C. <i>Bacteroides fragilis</i> | |
| 2. |
The commonest bacterial cause of cervicofacial actinomycosis is |
| A. | <i>A. naeslundii</i> |
| B. | <i>A. viscosus</i> |
| C. | <i>A. israelii</i> |
| D. | <i>A. meyeri</i> |
| Answer» D. <i>A. meyeri</i> | |
| 3. |
Which of the following bacteria is moderately saccharolytic? |
| A. | <i>Bacteriodes fragilis</i> |
| B. | <i>B gingivalis</i> |
| C. | <i>B melaninogenicus</i> |
| D. | <i>B levii</i> |
| Answer» D. <i>B levii</i> | |
| 4. |
Which of the following bacteria is acid-fast? |
| A. | <i>Actinomyces</i> |
| B. | <i>Nocardia</i> |
| C. | <i>Streptomyces</i> |
| D. | <i>Corynebacterium</i> |
| Answer» C. <i>Streptomyces</i> | |
| 5. |
Lactobacilli constitute the normal flora of |
| A. | prepubertal vagina |
| B. | adult vagina |
| C. | post-menopausal vagina |
| D. | none of these |
| Answer» C. post-menopausal vagina | |
| 6. |
Which of the following bacteria is gram-negative cocci? |
| A. | <i>Veillonella</i> |
| B. | <i>Peptococcus</i> |
| C. | <i>Peptostreptococcus</i> |
| D. | <i>Sporosarcina </i> |
| Answer» B. <i>Peptococcus</i> | |
| 7. |
Which of the following genera is included in the family Bacteroi-daceae? |
| A. | <i>Bacteroides</i> |
| B. | <i>Fusobacterium</i> |
| C. | <i>Leptotrichia</i> |
| D. | All of these |
| Answer» E. | |
| 8. |
The current genus name of a saccharolytic group of Bacteroides is |
| A. | <i>Porphyromonas</i> |
| B. | <i>Bacteroides </i> |
| C. | <i>Prevotella</i> |
| D. | None of these |
| Answer» B. <i>Bacteroides </i> | |
| 9. |
Colonies resembling molar teeth are produced by |
| A. | <i>Nocardia brasiliensis</i> |
| B. | <i>N. asteroids</i> |
| C. | <i>Actinomyces israelii</i> |
| D. | <i>Actinomadura madurae</i> |
| Answer» D. <i>Actinomadura madurae</i> | |
| 10. |
The commonest species of Bacteroides in fragilis group, which causes human infection, is |
| A. | <i>B vulgatus</i> |
| B. | <i>B fragilis</i> |
| C. | <i>B ovatus</i> |
| D. | <i>B merdae</i> |
| Answer» C. <i>B ovatus</i> | |
| 11. |
The bacteria which is predominant flora of the human gut is |
| A. | <i>Escherichia coli</i> |
| B. | <i>Clostridium perfringens</i> |
| C. | <i>Bacteroides</i> |
| D. | <i>Actinomyces</i> |
| Answer» C. <i>Bacteroides</i> | |