MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 13 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 enzyme removes the RNA primer with its 5’-nuclease activity? |
| A. | DNA polymerase I |
| B. | DNA polymerase II |
| C. | DNA polymerase III |
| D. | RNA polymerase |
| Answer» B. DNA polymerase II | |
| 2. |
DNA gyrase is a ______________ protein. |
| A. | helix-unwinding |
| B. | helix-destabilizing |
| C. | helix-relaxing |
| D. | helix-winding |
| Answer» D. helix-winding | |
| 3. |
Eukaryotes replicate their DNA from one origin or growing point per molecule. |
| A. | True |
| B. | False |
| Answer» C. | |
| 4. |
DNA_GYRASE_IS_A________________PROTEIN.?$ |
| A. | helix-unwinding |
| B. | helix-destabilizing |
| C. | helix-relaxing |
| D. | helix-winding |
| Answer» D. helix-winding | |
| 5. |
Which of the following enzyme removes the RNA primer with its 5’-nuclease activity?$# |
| A. | DNA polymerase I |
| B. | DNA polymerase II |
| C. | DNA polymerase III |
| D. | RNA polymerase |
| Answer» B. DNA polymerase II | |
| 6. |
Eukaryotes replicate their DNA from one origin or growing point per molecule? |
| A. | True |
| B. | False |
| Answer» C. | |
| 7. |
Which of the following replication methods leads to the production of two circular daughter chromosomes? |
| A. | Theta mode |
| B. | Sigma mode |
| C. | Linear mode |
| D. | Rolling circle method |
| Answer» B. Sigma mode | |
| 8. |
The Lambda Bacteriophage carries out which of the following replication methods? |
| A. | Theta mode |
| B. | Sigma mode |
| C. | Linear mode |
| D. | Does not carry out replication |
| Answer» C. Linear mode | |
| 9. |
If the chromosome were extended linearly then it would approximately measure? |
| A. | 13500 micrometre |
| B. | 1000 micrometre |
| C. | 1250 micrometre |
| D. | 500 micrometre |
| Answer» D. 500 micrometre | |
| 10. |
The chromosome of a typical bacterium is ________________ |
| A. | circular double-stranded DNA |
| B. | circular single-stranded DNA |
| C. | double-helix DNA |
| D. | single stranded DNA |
| Answer» B. circular single-stranded DNA | |
| 11. |
Which of the following are features of semiconservative replication? |
| A. | RNA replicates DNA molecule |
| B. | The DNA molecule produced contains two old templates |
| C. | One new DNA helix is formed |
| D. | DNA duplicates itself and the new chain contains old template strand and new complementary strand |
| Answer» E. | |
| 12. |
RNA consists of which combination of bases? |
| A. | Thymine,Guanine,Cytosine |
| B. | Guanine,Cytosine,Uracil |
| C. | Thymine,Adenine,Guanine |
| D. | Adenine,Cytosine,Thymine |
| Answer» C. Thymine,Adenine,Guanine | |
| 13. |
In DNA molecule, the amount of purines is equal to the amount of pyrimidines. |
| A. | True |
| B. | False |
| Answer» B. False | |