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 enzyme is inhibited by Fluoroacetate in Krebs cycle? |
| A. | Citrate synthase |
| B. | Aconitase |
| C. | Isocitrate dehydrogenase |
| D. | Fumarase |
| Answer» C. Isocitrate dehydrogenase | |
| 2. |
How many molecules of Co2 are produced by an acetyl group of acetyl-Co-A in a citric acid cycle? |
| A. | 3 |
| B. | 5 |
| C. | 1 |
| D. | 2 |
| Answer» E. | |
| 3. |
Which of these following enzymes does not take part in pyruvate –dehydrogenase complex? |
| A. | Glyceraldehyde-3 phosphate dehydrogenase |
| B. | Pyruvate dehydrogenase |
| C. | Dihydrolipoyl transacetylase |
| D. | Dihydrolipoyl dehydrogenase |
| Answer» B. Pyruvate dehydrogenase | |
| 4. |
Name the site of pyruvate oxidation. |
| A. | Cytosol |
| B. | Mitochondrial matrix |
| C. | Mitochondrial membrane |
| D. | Nucleus |
| Answer» C. Mitochondrial membrane | |
| 5. |
Name the inhibitor of glycolysis? |
| A. | Fluoroacetate |
| B. | Iodoacetate |
| C. | Malonate |
| D. | Actinomycin |
| Answer» C. Malonate | |
| 6. |
Which of these enzymes in glycolysis do not take part in an irreversible reaction? |
| A. | Hexokinase |
| B. | Phosphofructokinase |
| C. | Pyruvate kinase |
| D. | Glucokinase |
| Answer» E. | |
| 7. |
Glycolysis is also known as an Embden-Meyerhof pathway. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 8. |
Which of the following is not an aerobic reaction? |
| A. | Glycolysis |
| B. | Citric acid cycle |
| C. | Oxidative phosphorylation |
| D. | Fermentation |
| Answer» E. | |
| 9. |
Which of the following condition occur by incomplete oxidation of respiratory substrate? |
| A. | Feedback inhibition |
| B. | Feedback repression |
| C. | Aerobic condition |
| D. | Anaerobic condition |
| Answer» E. | |
| 10. |
What is respiratory substrate? |
| A. | The compounds which are reduced during respiration |
| B. | The compounds which are oxidized during respiration |
| C. | The intermediate compounds of respiration |
| D. | The end product of respiration |
| Answer» C. The intermediate compounds of respiration | |
| 11. |
Respiration is a ___________ |
| A. | Oxidative process |
| B. | Reductive process |
| C. | Catabolite repression |
| D. | Intermediate process |
| Answer» B. Reductive process | |