MCQOPTIONS
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MCQOPTIONS
This section includes 15 Mcqs, each offering curated multiple-choice questions to sharpen your Molecular Biology knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
How many subunits of Spo11 are involved in the process of cleavage of DNA? |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» C. 3 | |
| 2. |
What is the function of the Spo11 in meiotic recombination? |
| A. | Introduction of mutation |
| B. | Introduction of nick |
| C. | Introduction of DSB |
| D. | Introduction of lesion |
| Answer» D. Introduction of lesion | |
| 3. |
What are homologs? |
| A. | Part of DNA |
| B. | Pair of nucleus |
| C. | Pair of chromosomes |
| D. | Part of a cell |
| Answer» D. Part of a cell | |
| 4. |
For which biological phenomenon homologous recombination is critical? |
| A. | Mitosis |
| B. | Meiosis |
| C. | Fragmentation |
| D. | Sporing |
| Answer» C. Fragmentation | |
| 5. |
What is non-disjunction? |
| A. | Proper alignment |
| B. | Sister chromatid formation |
| C. | Failed alignment |
| D. | Chromosome segregation |
| Answer» D. Chromosome segregation | |
| 6. |
How many cycles are required for the configuration of chromosomes? |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» C. 3 | |
| 7. |
Processing of the DNA at the break site occurs at the 3 end. |
| A. | True |
| B. | False |
| Answer» C. | |
| 8. |
What are the components of the MRX protein? |
| A. | MreII, Rad50, Xrs2 |
| B. | Rad51, Rad52, Rad59 |
| C. | RecA, RuvC, RuvAB |
| D. | Rad51C, WRN, BLH |
| Answer» B. Rad51, Rad52, Rad59 | |
| 9. |
What is the source of energy during the action of SPO11? |
| A. | Cleavage of peptide bond |
| B. | Cleavage of amide bond |
| C. | Cleavage of glycoside bond |
| D. | Cleavage of phosphodiester bond |
| Answer» E. | |
| 10. |
What is the cleavage site of RuvC? |
| A. | 5 .A/TTTG/C .3 |
| B. | 5 .G/TTTC/T .3 |
| C. | 5 .T/TGCG/C .3 |
| D. | 5 .C/ATTG/T .3 |
| Answer» B. 5 .G/TTTC/T .3 | |
| 11. |
After cleaved by RuvC the resulting ligated recombination products will only be the splice product. |
| A. | True |
| B. | False |
| Answer» C. | |
| 12. |
Which component cleaves the specific DNA strands at the Holliday junction? |
| A. | RuvC |
| B. | RuvD |
| C. | RuvA |
| D. | RuvB |
| Answer» B. RuvD | |
| 13. |
The RuvAB complex specifically recognizes the Holliday junction in an ATP dependent manner. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 14. |
What is the joint molecule? |
| A. | RecB of the RecBCD pathway |
| B. | B DNA |
| C. | Z DNA |
| D. | Rec A bound three stranded structure |
| Answer» E. | |
| 15. |
What is the central protein of homologous recombination? |
| A. | RecB |
| B. | RecD |
| C. | RecA |
| D. | RecC |
| Answer» D. RecC | |