MCQOPTIONS
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MCQOPTIONS
This section includes 14 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 cAMP-dependent protein kinase has how many subunits? |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» E. | |
| 2. |
Which of the following is false about amino acid modification and activity? |
| A. | Acetylation of lysine residue |
| B. | Methylation of lysine and arginine residue |
| C. | Glycosylation of serine and threonine residue |
| D. | Nitrosylation of arginine residue |
| Answer» E. | |
| 3. |
Like kinases all phosphatases are also species specific in nature. |
| A. | True |
| B. | False |
| Answer» C. | |
| 4. |
The regulatory molecules bind to the catalytic site of an enzyme to regulate its activity. |
| A. | True |
| B. | False |
| Answer» C. | |
| 5. |
WHICH_OF_THE_FOLLOWING_IS_FALSE_ABOUT_AMINO_ACID_MODIFICATION_AND_ACTIVITY??$ |
| A. | Acetylation of lysine residue |
| B. | Methylation of lysine and arginine residue |
| C. | Glycosylation of serine and threonine residue |
| D. | Nitrosylation of arginine residue |
| Answer» E. | |
| 6. |
The_cAMP-dependent_protein_kinase_has_how_many_subunits?$ |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» E. | |
| 7. |
Like kinases all phosphatases are also species specific in nature? |
| A. | True |
| B. | False |
| Answer» C. | |
| 8. |
Protein kinases transfer phosphate groups to the side chains of which of the following? |
| A. | Serine |
| B. | Valine |
| C. | Glutamate |
| D. | Lysine |
| Answer» B. Valine | |
| 9. |
The activity of which of the following proteins is not regulated by covalent modifications? |
| A. | Digestive enzymes |
| B. | Apoptosis |
| C. | Cell signaling |
| D. | Blood clotting |
| Answer» D. Blood clotting | |
| 10. |
The regulatory proteins bind to the enzymes with covalent linkages. |
| A. | True |
| B. | False |
| Answer» C. | |
| 11. |
Which of the following is incorrect about the inactive state of the Ras protein? |
| A. | GDP bound form |
| B. | Cell proliferation activation |
| C. | Mutation leads to cancer |
| D. | Changes configuration when bound to regulatory molecules |
| Answer» C. Mutation leads to cancer | |
| 12. |
The regulatory molecules bind to the catalytic site of enzyme to regulate its activity. |
| A. | True |
| B. | False |
| Answer» C. | |
| 13. |
Binding of small molecules to enzymes leads to feedback inhibition. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 14. |
Regulation of enzyme activity is accomplished in ___________ steps. |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» C. 3 | |