MCQOPTIONS
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MCQOPTIONS
This section includes 12 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. |
Competence in a bacteria ___________ |
| A. | DNA |
| B. | RNA |
| C. | Protein |
| D. | Polysaccharides |
| Answer» D. Polysaccharides | |
| 2. |
What do you mean by competent bacteria? |
| A. | Able to take up genetic material from surrounding |
| B. | Able to transfer genetic material to the surrounding |
| C. | Takes up only its own genetic material |
| D. | Can transfer genetic material from one bacterium to another |
| Answer» B. Able to transfer genetic material to the surrounding | |
| 3. |
How many copies of special short nucleotide pair sequences for identification are present in H. influenzae and N. gonorrbacae? |
| A. | 100 copies |
| B. | 600 copies |
| C. | 500 copies |
| D. | 1000 copies |
| Answer» C. 500 copies | |
| 4. |
In the following which bacteria only take up their own DNA? |
| A. | S. pneumoniae |
| B. | B. subtilis |
| C. | N. gonorrbacae |
| D. | Mycoplasma |
| Answer» D. Mycoplasma | |
| 5. |
The genetic information is stored in DNA rather than protein. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 6. |
How many types of bacterial capsule are present for pneumococcus depending on the genotype of the cell? |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | Infinite |
| Answer» E. | |
| 7. |
What is the function of the capsule of the bacterial cells? |
| A. | Virulence |
| B. | Protection |
| C. | Adherence |
| D. | Both Virulence and Protection |
| Answer» E. | |
| 8. |
During Frederick Griffith’s experiments what type of colonies were generated by the capsulated pneumococci? |
| A. | Type R |
| B. | Type L |
| C. | Type S |
| D. | Type B |
| Answer» D. Type B | |
| 9. |
In which year Frederic Griffith discovered transformation? |
| A. | 1920 |
| B. | 1928 |
| C. | 1936 |
| D. | 1944 |
| Answer» C. 1936 | |
| 10. |
What is transduction? |
| A. | Bacterial genes are transferred from donor to recipient cells |
| B. | Bacterial genes are transferred from recipient to donor cells |
| C. | Bacterial genes are carried from a donor cell to a recipient cell via bacteriophage |
| D. | Uptake of naked DNA by hosts |
| Answer» D. Uptake of naked DNA by hosts | |
| 11. |
What is conjugation? |
| A. | Transformation of DNA from a donor to the recipient cell |
| B. | Interchanging of two types of DNA |
| C. | Transfer of DNA from recipient to donor |
| D. | Uptake of DNA from hosts |
| Answer» B. Interchanging of two types of DNA | |
| 12. |
Transformation involves the uptake of _____________ |
| A. | Free DNA |
| B. | Free RNA |
| C. | Free tRNA |
| D. | Free mRNA |
| Answer» B. Free RNA | |