MCQOPTIONS
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MCQOPTIONS
This section includes 11 Mcqs, each offering curated multiple-choice questions to sharpen your Life Sciences knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
What is an Isozyme? |
| A. | Same structure, different function |
| B. | Different structure, the same function |
| C. | Same structure, the same function |
| D. | Different structure, different function |
| Answer» C. Same structure, the same function | |
| 2. |
Name the enzyme which is found in tears, sweat, and an egg white? |
| A. | Ribozyme |
| B. | Lysozyme |
| C. | Zymogen |
| D. | Isozymes |
| Answer» C. Zymogen | |
| 3. |
Lineweaver-Burk plot is also known as______ |
| A. | Double reciprocal plot |
| B. | Hanes-Woolf plot |
| C. | Eadie-Hofstee plot |
| D. | Steady-state equation |
| Answer» B. Hanes-Woolf plot | |
| 4. |
Which of the following is not an example of irreversible enzyme inhibitor? |
| A. | Cyanide |
| B. | Sarin |
| C. | Diisopropyl phosphoflouridate (DIPF) |
| D. | Statin drugs |
| Answer» E. | |
| 5. |
What is the SI unit of enzyme activity? |
| A. | Km |
| B. | Kat |
| C. | K<sub>cat</sub> |
| D. | V<sub>max</sub> |
| Answer» C. K<sub>cat</sub> | |
| 6. |
Which of the following is not a catalytic strategy for an enzyme to perform specific reaction? |
| A. | Covalent catalysis |
| B. | Metal ion catalysis |
| C. | Michaelis constant |
| D. | Acid-base catalysis |
| Answer» D. Acid-base catalysis | |
| 7. |
Which of the following is INCORRECT for the lock-and-key model? |
| A. | It is used to describe the binding process |
| B. | The active site of the enzyme is complementary to the substrate |
| C. | It demonstrates enzyme-substrate complex |
| D. | The binding of the substrate produces a conformational change in enzyme |
| Answer» E. | |
| 8. |
What is the binding energy? |
| A. | Free energy released in the formation of enzyme-substrate interaction |
| B. | The energy required to form a bond |
| C. | The energy required to bind substrate |
| D. | It is the activation energy |
| Answer» B. The energy required to form a bond | |
| 9. |
Which of the following is an example of ligases enzyme? |
| A. | Mutases |
| B. | Epimerases |
| C. | Racemases |
| D. | Carboxylases |
| Answer» E. | |
| 10. |
The zymogen is an inactive precursor of an active enzyme. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 11. |
Which of the following function is catalyzed by Racemases? |
| A. | Removal of water |
| B. | Intramolecular transfer of a functional group |
| C. | Interconversion of L and D stereoisomers |
| D. | Inversion of asymmetric carbon atom |
| Answer» D. Inversion of asymmetric carbon atom | |