MCQOPTIONS
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MCQOPTIONS
This section includes 15 Mcqs, each offering curated multiple-choice questions to sharpen your Cell Biology knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Moderately repeated DNA sequences can vary from _______ percent of the total DNA. |
| A. | 10-20 |
| B. | 20-80 |
| C. | 20-50 |
| D. | 50-80 |
| Answer» C. 20-50 | |
| 2. |
In situ hybridization was aimed at determining the location of _______ |
| A. | satellite DNA |
| B. | nucleus |
| C. | mitochondria |
| D. | autosomes |
| Answer» B. nucleus | |
| 3. |
Which type of DNA have been used to analyze relationship between different human populations? |
| A. | Circular DNA |
| B. | Mitochondrial DNA |
| C. | Minisatellite DNA |
| D. | Microsatellite DNA |
| Answer» E. | |
| 4. |
Which of the following type of DNA sequences for the basis of DNA fingerprinting? |
| A. | Satellite DNA |
| B. | Minisatellite DNA |
| C. | Microsatellite DNA |
| D. | Tandem sequences |
| Answer» C. Microsatellite DNA | |
| 5. |
Percentage of highly repeated DNA sequences in a genome is __________ |
| A. | 1-10 % |
| B. | 15-20% |
| C. | 20-30% |
| D. | 35-40% |
| Answer» B. 15-20% | |
| 6. |
For three different samples of DNA with same concentration, the rate of annealing will depend on __________ |
| A. | pH |
| B. | absorbance |
| C. | temperature |
| D. | genome size |
| Answer» E. | |
| 7. |
Reannealing or renaturation of the DNA is the basis of the technique ___________ |
| A. | paper chromatography |
| B. | ultraviolet spectroscopy |
| C. | nucleic acid hybridization |
| D. | gel electrophoresis |
| Answer» D. gel electrophoresis | |
| 8. |
DNA renaturation was first realized in the year ___________ |
| A. | 1940 |
| B. | 1950 |
| C. | 1960 |
| D. | 1970 |
| Answer» D. 1970 | |
| 9. |
Higher the concentration of GC content, lower the Tm. |
| A. | True |
| B. | False |
| Answer» C. | |
| 10. |
The temperature at which the shift in absorbance is half completed is termed as ___________ |
| A. | melting temperature |
| B. | denaturation temperature |
| C. | shifting temperature |
| D. | absorbance temperature |
| Answer» B. denaturation temperature | |
| 11. |
The process of DNA melting can be monitored by a change in ___________ |
| A. | absorbance |
| B. | pH |
| C. | concentration |
| D. | color |
| Answer» B. pH | |
| 12. |
The haploid set of human chromosomes consist of __________ chromosomes |
| A. | 22 |
| B. | 23 |
| C. | 24 |
| D. | 25 |
| Answer» D. 25 | |
| 13. |
The three-dimensional structure of DNA can be described by _________ |
| A. | Vacuum filtration |
| B. | X-ray crystallography |
| C. | Gel electrophoresis |
| D. | Mass spectroscopy |
| Answer» C. Gel electrophoresis | |
| 14. |
Etoposide and doxorubicin, the drugs used in Cancer treatment target the enzyme ___________ |
| A. | topoisomerase I |
| B. | topoisomerase II |
| C. | helicase |
| D. | isomerase |
| Answer» C. helicase | |
| 15. |
Circular DNAs are negatively supercoiled. |
| A. | True |
| B. | False |
| Answer» B. False | |