MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 14 Mcqs, each offering curated multiple-choice questions to sharpen your Pharmaceutical Biotechnology knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
In conjugation of HFr cell with F cell the recipient ______________ |
| A. | Stays F<sup> </sup> |
| B. | Become F<sup>+</sup> |
| C. | Become HFr |
| D. | Become F |
| Answer» B. Become F<sup>+</sup> | |
| 2. |
What genetic information (DNA) does an F-plasmid contain? |
| A. | Chromosomal DNA |
| B. | Non-chromosomal DNA with regulatory genes |
| C. | DNA that codes for proteins to produce pili |
| D. | B and C |
| Answer» E. | |
| 3. |
What is the unidirectional transfer of genetic material from the donor to the recipient is termed? |
| A. | Conjugation |
| B. | Recombination |
| C. | Transduction |
| D. | Transformation |
| Answer» B. Recombination | |
| 4. |
Conjugation between F+ and F cell results in _______________ |
| A. | Two F<sup> </sup> cells |
| B. | F<sup> </sup>cell becomes F<sup>+</sup> |
| C. | F<sup> </sup> cell remains F<sup> </sup> cell with a little DNA from F<sup>+</sup> cell |
| D. | Remains the same without any change |
| Answer» C. F<sup> </sup> cell remains F<sup> </sup> cell with a little DNA from F<sup>+</sup> cell | |
| 5. |
What is the order of the gene where columns are for different HFR and values denote time? |
| A. | Azi, Lac, Gal, Ton |
| B. | Lac, Gal, Azi, Ton |
| C. | Gal, Lac, Ton, Azi |
| D. | Tob, Azi, Lac, Gal |
| Answer» C. Gal, Lac, Ton, Azi | |
| 6. |
In conjugation of F+ cell and F cell the recipient will be F . |
| A. | True |
| B. | False |
| Answer» C. | |
| 7. |
Which one of the following gets transferred during Hfr conjugation? |
| A. | F factor |
| B. | F- factor |
| C. | Donor DNA |
| D. | Donor plasmid |
| Answer» D. Donor plasmid | |
| 8. |
Which one of the following do not have a self-transmissible plasmid? |
| A. | E. colli |
| B. | Streptococcus |
| C. | Bacillus |
| D. | Enterococcus |
| Answer» B. Streptococcus | |
| 9. |
Conjugation can t take place between ___________ |
| A. | F- and F+ |
| B. | F and F- |
| C. | HFR and F- |
| D. | HFR and F+ |
| Answer» E. | |
| 10. |
Sex pilus is not required for plasmid transfer. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 11. |
Who releases the plasmid encoded proteins required for adhering. |
| A. | Donor cell |
| B. | Recipient cell |
| C. | F+ cell |
| D. | F- cell |
| Answer» B. Recipient cell | |
| 12. |
Which of the following made it easier to conclude that physical contact of the cells was necessary for conjugation in Davis experiment? |
| A. | Filter |
| B. | U tube |
| C. | Separate medium for different strains of bacterium |
| D. | Distant species of bacterium |
| Answer» B. U tube | |
| 13. |
By whose experiment conjugation was proved? |
| A. | Robert Hook |
| B. | Bernard Davis |
| C. | Thomas Bill and Jimmy Bill |
| D. | Joshua Lederberg and Edward Tatum |
| Answer» C. Thomas Bill and Jimmy Bill | |
| 14. |
By whose experiment evidence of the existence of conjugation was established? |
| A. | Robert Hook |
| B. | Albert Einstein |
| C. | Thomas Bill and Jimmy Bill |
| D. | Joshua Lederberg and Edward Tatum |
| Answer» E. | |