SZABMU AHS 2026 Blood Free Quiz 3

1. Which substance is a natural anticoagulant produced by basophils and mast cells?

A. Heparin B. Warfarin C. Aspirin D. Clopidogrel

2. How does warfarin act as an anticoagulant?

A. Inhibits platelet aggregation B. Antagonizes vitamin K C. Directly inhibits thrombin D. Increases plasmin

3. What is the antiplatelet mechanism of aspirin?

A. Activating platelets B. Inhibiting thrombin C. Inhibiting platelet aggregation D. Dissolving clots

4. Which enzyme breaks down fibrin clots?

A. Thrombin B. Plasminogen C. Plasmin D. Factor Xa

5. What is the term for a low RBC count or hemoglobin?

A. Anemia B. Polycythemia C. Leukemia D. Thrombocytopenia

6. Which anemia is caused by lack of iron?

A. Vitamin B12 deficiency B. Iron deficiency C. Folate deficiency D. Hemolytic anemia

7. What causes pernicious anemia?

A. Iron deficiency B. Folate deficiency C. Vitamin B12 deficiency D. Hemolytic

8. What is the molecular cause of sickle cell anemia?

A. Mutation in alpha-globin B. Mutation in beta-globin C. Iron overload D. Vitamin deficiency

9. What is impaired in thalassemia?

A. Globin chain synthesis B. Globin structure C. Iron metabolism D. RBC membrane

10. What type of cancer is leukemia?

A. RBC cancer B. WBC cancer C. Platelet cancer D. Plasma cell cancer