MCQOPTIONS
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MCQOPTIONS
This section includes 11 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. |
The completion of translocation requires the action of the factor _________________ |
| A. | EF-Tu |
| B. | EF-G |
| C. | eIF2 |
| D. | eIF4G |
| Answer» C. eIF2 | |
| 2. |
Which of the following steps is not required for the process of translocation? |
| A. | Frame shift in hybrid states |
| B. | Movement of P site tRNA to E site |
| C. | Movement of A site tRNA to P site |
| D. | Movement of ribosome by three nucleotides |
| Answer» B. Movement of P site tRNA to E site | |
| 3. |
Which part of the large subunit helps in the formation of the peptide bond? |
| A. | 5S rRNA |
| B. | Proteins |
| C. | 23S rRNA |
| D. | 18S rRNA |
| Answer» D. 18S rRNA | |
| 4. |
How many mechanisms are involved in the maintenance of the fidelity of translation? |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» E. | |
| 5. |
The only fidelity testing of the translation is by observing the energy difference involved in the correct and incorrect base pairing. |
| A. | True |
| B. | False |
| Answer» C. | |
| 6. |
The activation of GTPase activity of the enzyme EF-Tu occurs after its binding to the aminoacylated tRNA. |
| A. | True |
| B. | False |
| Answer» C. | |
| 7. |
Once the tRNA is aminoacylated, EF-Tu binds to the tRNA at the ____________ |
| A. | 5 end of the tRNA |
| B. | 3 end of the tRNA |
| C. | Amino acid |
| D. | Variable loop of tRNA |
| Answer» C. Amino acid | |
| 8. |
Aminoacyl tRNA needs an escort to carry them to the ribosome bound mRNA. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 9. |
The auxillary protein required for the elongation of polypeptide is energy independent. |
| A. | True |
| B. | False |
| Answer» C. | |
| 10. |
The events controlling the correct addition of amino acid is controlled by ____________ proteins. |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» C. 3 | |
| 11. |
For the correct addition of amino acid to the growing polypeptide chain which of the following does not play any role? |
| A. | Loading of initiator tRNA to the P site |
| B. | Loading of correct aminoacyl tRNA to the A site |
| C. | Formation of peptide bond between the existing amino acid and the incoming amino acid |
| D. | The formed tRNA with the growing polypeptide is translocated from the A site to the P site |
| Answer» B. Loading of correct aminoacyl tRNA to the A site | |