MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 15 Mcqs, each offering curated multiple-choice questions to sharpen your Cytogenetics knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
In evolutionary history which of the following rose 1st? |
| A. | DNA |
| B. | RNA |
| C. | Protein |
| D. | Oxygenic mode of respiration |
| Answer» C. Protein | |
| 2. |
Aminoglycosides can kill_______________ |
| A. | Broad spectrum of prokaryotes |
| B. | Only gram positive bacteria |
| C. | Only anerobic gram positive bacteria |
| D. | Only aerobic gram negative bacteria |
| Answer» E. | |
| 3. |
Tetracyclin is only harmful to prokaryotes. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 4. |
In an experiment you stall the ribosome with low Mg2+ concentration. Which of the following will then cause the release of the Peptide from the ribosome? |
| A. | Increasing the Mg2+ concentration |
| B. | Adding Urea |
| C. | Adding pyromycin |
| D. | Adding Varomycin |
| Answer» D. Adding Varomycin | |
| 5. |
AMINOGLYCOSIDES_CAN_KILL_______________?$ |
| A. | Broad spectrum of prokaryotes |
| B. | Only gram positive bacteria |
| C. | Only anerobic gram positive bacteria |
| D. | Only aerobic gram negative bacteria |
| Answer» E. | |
| 6. |
TETRACYCLIN_IS_ONLY_HARMFUL_TO_PROKARYOTES.?$ |
| A. | True |
| B. | False |
| Answer» B. False | |
| 7. |
In evolutionary history which of the following rose 1st?$ |
| A. | DNA |
| B. | RNA |
| C. | Protein |
| D. | Oxygenic mode of respiration |
| Answer» C. Protein | |
| 8. |
What is the distance between the catalytic site and the nearest protein in the ribosome? |
| A. | No distance |
| B. | 10 angestron |
| C. | 50 angestron |
| D. | 100 angestron |
| Answer» D. 100 angestron | |
| 9. |
How many proteins were still intact after the treatment of ribosome with SDS and proteinase K? |
| A. | 4 |
| B. | 8 |
| C. | 12 |
| D. | 16 |
| Answer» C. 12 | |
| 10. |
You gradually treat ribosome with SDS followed by Proteinase K and the finally extract it with phenol. Which of the options match the result you expect? |
| A. | Ribosome withstands all these treatments and still has peptidyl transferase activity |
| B. | It stands upto SDS treatment |
| C. | It stands no treatment at all |
| D. | It stands upto proteinase K treatment |
| Answer» E. | |
| 11. |
Which of the following was not a protein degrading agent used by Noller in his experiment? |
| A. | Phenol |
| B. | SDS |
| C. | Urea |
| D. | Proteinase K |
| Answer» D. Proteinase K | |
| 12. |
What was the unnatural experimental condition which proved to be a criticism in Robert Traut and Munro experiment? |
| A. | Use of low Mg<sup>2+</sup> concentration |
| B. | Use of 33% methanol |
| C. | Use of purified ribosome |
| D. | Use of puromycin |
| Answer» B. Use of 33% methanol | |
| 13. |
What discovery was stated by Robert Traut and Munro experiment? |
| A. | 30S subunit is binding to IF |
| B. | 50S subunit has peptidy transferase activity |
| C. | rRNA has peptifyl transfer activity |
| D. | Urea prevents peptide bond formation |
| Answer» C. rRNA has peptifyl transfer activity | |
| 14. |
In an experiment you stall the ribosome with low Mg2+ concentration. Which of the following will then cause the release of the Peptide from the ribosome? |
| A. | Increasing the Mg<sup>2+</sup> concentration |
| B. | Adding Urea |
| C. | Adding pyromycin |
| D. | Adding Varomycin |
| Answer» D. Adding Varomycin | |
| 15. |
In an experiment you grow some cells in a media containing heavy isotopes of C and N. Then you transfer then to a lighter media. If you centrifuge the ribosomes so obtained after an hour how many bands will you expect? |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» E. | |