MCQOPTIONS
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MCQOPTIONS
This section includes 15 Mcqs, each offering curated multiple-choice questions to sharpen your Biology knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Which of these ions play an important role in blood clotting? |
| A. | Sodium ions |
| B. | Calcium ions |
| C. | Potassium ions |
| D. | Phosphate ions |
| Answer» C. Potassium ions | |
| 2. |
Which of these activates fibrinogen? |
| A. | Thrombin |
| B. | Fibrin |
| C. | Thrombokinase |
| D. | Prothrombin |
| Answer» B. Fibrin | |
| 3. |
What is the network of threads in a coagulum known as? |
| A. | Clot |
| B. | Clotting factors |
| C. | Fibrin |
| D. | Formed elements |
| Answer» D. Formed elements | |
| 4. |
Where is prothrombin present? |
| A. | Inside lymphocytes |
| B. | Inside thrombocytes |
| C. | In the plasma |
| D. | On the surface of RBCs |
| Answer» D. On the surface of RBCs | |
| 5. |
Which of these are not involved in the coagulation of blood? |
| A. | Thrombin |
| B. | Fibrin |
| C. | Thrombokinase |
| D. | Trypsinogen |
| Answer» E. | |
| 6. |
Fibrins trap destroyed formed elements during blood clotting. True or false? |
| A. | True |
| B. | False |
| Answer» B. False | |
| 7. |
How can erythroblastosis fetalis be avoided? |
| A. | By administering Rh antibodies to the mother |
| B. | By administering anti-Rh antibodies to the baby |
| C. | By administering anti-Rh antibodies to the mother |
| D. | By administering anti-Rh antibodies to both |
| Answer» D. By administering anti-Rh antibodies to both | |
| 8. |
Which of these does not happen to the baby during erythroblastosis fetalis? |
| A. | Jaundice |
| B. | Anemia |
| C. | Swollen liver |
| D. | High erythrocyte count |
| Answer» E. | |
| 9. |
What antibodies are formed when a Rh-negative mother bears a Rh-positive child? |
| A. | Rh antibodies are formed in the mother |
| B. | Rh antibodies are formed in the fetus |
| C. | Rh antibodies are formed during the second pregnancy |
| D. | Rh antibodies are formed in both |
| Answer» B. Rh antibodies are formed in the fetus | |
| 10. |
Which of these structures prevent the mixing of fetal blood with mother’s blood? |
| A. | Amniotic fluid |
| B. | Amnion |
| C. | Placenta |
| D. | Chorion |
| Answer» D. Chorion | |
| 11. |
Approximately what percentage of people are Rh positive? |
| A. | 50% |
| B. | 80% |
| C. | 90% |
| D. | 75% |
| Answer» C. 90% | |
| 12. |
Which of these are present in the plasma of a person having ‘O’ blood group? |
| A. | Anti-A and anti-B |
| B. | Anti-A |
| C. | Anti-B |
| D. | Antibodies are absent |
| Answer» B. Anti-A | |
| 13. |
Persons having which blood group are known as universal donors? |
| A. | A |
| B. | B |
| C. | O |
| D. | AB |
| Answer» D. AB | |
| 14. |
What happens when blood groups are not compatible during blood transfusion? |
| A. | Formation of eosinophils |
| B. | Only neutrophils are destroyed |
| C. | Destruction of RBCs |
| D. | Formation of basophils |
| Answer» D. Formation of basophils | |
| 15. |
Which of these blood groups do not have a surface antigen? |
| A. | A |
| B. | B |
| C. | AB |
| D. | O |
| Answer» E. | |