MCQOPTIONS
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MCQOPTIONS
This section includes 9 Mcqs, each offering curated multiple-choice questions to sharpen your Microbiology knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
What is the colour of the plaque formed? |
| A. | yellow |
| B. | opaque |
| C. | clear |
| D. | blue |
| Answer» D. blue | |
| 2. |
What is the colour of the plaque formed? |
| A. | yellow |
| B. | opaque |
| C. | clear |
| D. | blue |
| Answer» D. blue | |
| 3. |
In the growth curve of plaque-forming units, the time from infection until lysis is known as ____________________ |
| A. | eclipse period |
| B. | rise period |
| C. | burst period |
| D. | latent period |
| Answer» E. | |
| 4. |
Which of the following enzymes transcribe late genes? |
| A. | ligases |
| B. | nucleases |
| C. | RNA polymerase |
| D. | restriction enzymes |
| Answer» D. restriction enzymes | |
| 5. |
The delayed early genes codes for which of the following enzymes? |
| A. | phage enzymes |
| B. | RNA polymerase |
| C. | nucleases |
| D. | oxidases |
| Answer» B. RNA polymerase | |
| 6. |
The protein coat of the virus remains outside the host cell. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 7. |
Which of the following is the correct sequence of events in replication by bacterial phage? |
| A. | adsorption,pinning,DNA injection,sheath contraction |
| B. | adsorption,pinning,sheath contraction,DNA injection |
| C. | adsorption,absorption,sheath contraction,pinning |
| D. | absorption,adsorption,DNA injection |
| Answer» C. adsorption,absorption,sheath contraction,pinning | |
| 8. |
At what temperature incubation is required for the adsorption of phage T4 and DNA injection into E.coli? |
| A. | 50 degree C |
| B. | 15 degree C |
| C. | 37 degree C |
| D. | 80 degree C |
| Answer» D. 80 degree C | |
| 9. |
Which of the following is the first step in replication by bacterial phages? |
| A. | adsorption |
| B. | penetration |
| C. | transcription |
| D. | assembly and release |
| Answer» B. penetration | |