MCQOPTIONS
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MCQOPTIONS
This section includes 10 Mcqs, each offering curated multiple-choice questions to sharpen your Life Sciences knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Which of the following statement(s) is/are true in regards to F+ x F- mating events? |
| A. | DNA is transferred from F- to F+ cells |
| B. | DNA is transferred from F+ to F- cells |
| C. | No DNA is transferred because F- cells are unable to perform conjugation |
| D. | No DNA is transferred because F+ cells are unable to perform conjugation |
| Answer» C. No DNA is transferred because F- cells are unable to perform conjugation | |
| 2. |
Which type of plasmid can exist with or without being integrated into the host's chromosome? |
| A. | Medisome |
| B. | Lisosome |
| C. | Lysogen |
| D. | Episome |
| Answer» E. | |
| 3. |
Name the protein, which is involved in homologous recombination in E.coli? |
| A. | Topoisomerase |
| B. | Gyrase |
| C. | Helicase |
| D. | RecBCD enzyme |
| Answer» E. | |
| 4. |
Name the phenomenon of allele replacement during recombination and DNA repair? |
| A. | Replication |
| B. | Mutation |
| C. | Transversion |
| D. | Gene conversion |
| Answer» E. | |
| 5. |
Which of the following is NOT a recombination system? |
| A. | RecBCD |
| B. | RecE |
| C. | RecF |
| D. | DnaF |
| Answer» E. | |
| 6. |
Who proposed holiday model for homologous recombination? |
| A. | Gobind Khurana |
| B. | Louis Pasteur |
| C. | Robin Holiday |
| D. | Niels Bohr |
| Answer» D. Niels Bohr | |
| 7. |
Which of the following is site specific recombination? |
| A. | Modification |
| B. | Transposition |
| C. | Holiday junction |
| D. | Retrotransposons |
| Answer» C. Holiday junction | |
| 8. |
Which of the following is NOT true about homologous recombination? |
| A. | Exchange of homologous segments |
| B. | Exchange takes place between two homologous DNA molecules |
| C. | It is also termed as general recombination |
| D. | It involves a direct exchange of sequences of DNA |
| Answer» E. | |
| 9. |
Recombination is responsible for crossing-over during meiosis of eukaryotic cells. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 10. |
Rearrangement of DNA that involves the breakage and reunion of DNA is called___________ |
| A. | Replication |
| B. | Recombination |
| C. | Translation |
| D. | Transcription |
| Answer» C. Translation | |