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. |
Which of the following reaction is catalyzed by Lyase? |
| A. | Breaking of bonds |
| B. | Formation of bonds |
| C. | Intramolecular rearrangement of bonds |
| D. | Transfer of group from one molecule to another |
| Answer» B. Formation of bonds | |
| 2. |
Mark the CORRECT function of enzyme, Peptidase? |
| A. | Cleave phosphodiester bond |
| B. | Cleave amino bonds |
| C. | Remove phosphate from a substrate |
| D. | Removal of H2O |
| Answer» C. Remove phosphate from a substrate | |
| 3. |
What is the function of phosphorylase? |
| A. | Transfer inorganic phosphate |
| B. | Transfer a carboxylate group |
| C. | Use H2O2 as the electron acceptor |
| D. | Transfer amino group |
| Answer» B. Transfer a carboxylate group | |
| 4. |
Name the enzyme which catalyzes the oxidation-reduction reaction? |
| A. | Transaminase |
| B. | Glutamine synthetase |
| C. | Phosphofructokinase |
| D. | Oxidoreductase |
| Answer» E. | |
| 5. |
Name the enzyme secreted by pancreas? |
| A. | Pepsin |
| B. | Chymotrypsin |
| C. | Trypsin |
| D. | Alcohol dehydrogenase |
| Answer» D. Alcohol dehydrogenase | |
| 6. |
Which of this vitamin is associated with the coenzyme Biocytin? |
| A. | Nicotinic acid |
| B. | Thiamine |
| C. | Biotin |
| D. | Pyridoxine |
| Answer» D. Pyridoxine | |
| 7. |
Name the coenzyme of riboflavin (B2)? |
| A. | NAD or NADP |
| B. | FAD and FMN |
| C. | Coenzyme A |
| D. | Thiamine pyrophosphate |
| Answer» C. Coenzyme A | |
| 8. |
What is an apoenzyme? |
| A. | It is a protein portion of an enzyme |
| B. | It is a non-protein group |
| C. | It is a complete, biologically active conjugated enzyme |
| D. | It is a prosthetic group |
| Answer» B. It is a non-protein group | |
| 9. |
What is the nature of an enzyme? |
| A. | Vitamin |
| B. | Lipid |
| C. | Carbohydrate |
| D. | Protein |
| Answer» E. | |
| 10. |
Enzyme increases the rate of reaction by lowering the activation energy. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 11. |
A __________is a biocatalyst that increases the rate of the reaction without being changed. |
| A. | Aluminum oxide |
| B. | Silicon dioxide |
| C. | Enzyme |
| D. | Hydrogen peroxide |
| Answer» D. Hydrogen peroxide | |