25 Best Blood MCQ Questions with Answers
1. Discovery of blood groups was done by
(a) Karl Landsteiner
(b) Paul Ehrlich
(c) Ogston
2. Haemopoiesis is a process of the production of
(a) Blood plasma
(b) Erythrocytes
(c) Bone marrow
(d) Haemoglobin
3. Which of the following is not required for clot formation?
(a) Vitamin K
(b) Calcium
(c) Plasmin
(d) Fibrinogen
4. What happens to the iron (Fe) that is released during the breakdown of damaged RBCs?
(a) It is used to synthesize proteins
(b) It is transported to the liver where it becomes part of the bile
(c) It is converted into urobilin and excreted in urine
(d) It attaches to transferrin and is transported to bone marrow for use in hemoglobin synthesis
5. Which of the following would not cause an increase in erythropoietin?
(a) Anemia
(b) High altitude
(c) Polycythemia
(d) Hemorrhage
6. Which of the following is a mismatch between blood cells and their description?
(a) Neutrophils – Respond to tissue destruction by bacteria; release lysozyme, strong oxidants, and defensins
(b) Lymphocytes-Occur as B-cells, T-cells, and natural killer cells
(c) Eosinophils – WBC showing a kidney-shaped nucleus; capable of phagocytosis
(d) Basophils-Involved in inflammatory and allergic reactions; are involved in hypersensitivity reactions
7. Which of the following is a mismatch?
(a) Thrombin-Serves as the catalyst to form fibrin
(b) Fibrin-Forms the threads of a clot; produced from fibrinogen
(c) Plasmin- Tissue protein that leaks into the blood from cells outside blood vessels and initiates the formation of prothrombinase
(d) Heparin – An anticoagulant
8. What is not considered a leucocyte?
a. Lymphocyte
b. Monocyte
c. Neutrophil
d. Thrombocyte
9. The process that occurs when there is a shortage of oxygen in the body
a. Haematocriti
b. Haemopoiesis
c. Erythropoietin
d. Thrombocytosis
10. The main function of erythrocytes
a Aggregate and prevent bleeding
b. Defends the body against bacteria
c. Transport nutrients
d. Transport oxygen
11. If tests reveals high levels of cosinophils what may this indicate
a. A fungal infection
b. Leukaemia
c. A viral infection
d. An allergy
12. Definition of haemostats is
a. The formation of blood cells
b. The pooling of blood
c. The prevention of bleeding
d The destruction of red blood cells
13. The chemical events common to intrinsic & extrinsic pathways systems begin with
a. Blood vessel constriction
b. Activation of factor X
c. Activation of fibrinogen
d. Platelet plug formation
14. The intrinsic pathway of blood coagulation is activated by
a. Damage to the vascular wall or external tissue
b. Factor VII
c. Injury to the endothelial lining of the vessel wall
d. Activation of factor XII
15. Definition of embolus is
a. A venous clot
b. A clot that has travelled
c. A clot that is bound to a vessel
d. An unformed clot
16. Which descendant does the hemocytoblast form?
a. Lymphoid stem cells
b. Red blood stem cells
c. White blood stem cells
d. Leukemia stem cells
17. What does erythropoietin control?
a. Rate of erythrocyte production
b. Rate of leukocyte production
c. Rate of myloid production
d. Rate of stem cell production
18. What of blood is responsible for fighting infections?
a. Red Blood Cells
b. White Blood Cells
c. Platelets
d. Plasma
19. What part of blood is responsible for carrying oxygen and carbon dioxide to body cells?
a. Red Blood Cells
b. White Blood Cells
c. Platelets
d. Plasma
20. What part of blood is responsible for clotting blood?
a. Red Blood Cells
b. White Blood Cells
c. Platelets
d. Plasma
21. What part of blood is responsible for carrying wastes, nutrients, and minerals?
a. Red Blood Cells
b. White Blood Cells
c. Platelets
d. Plasma
22. Each hemoglobin molecule is able to transport ____ molecules of oxygen
a. 1
b. 2
c. 3
d. 4
23. A person has blood group A means he/she has
a) an antigen in RBC
b) an antigen in plasma
c) b antigen in RBC
d) b antigen in plasma
24. A person has blood group B means he/she has
a) an antigen in RBC
b) an antigen in plasma
c) b antigen in RBC
d) b antigen in plasma
25. For blood clotting fibrinogen is changed into fibrin with the help of
a) thrombin
b) platelets
c) vitamin k
d) antithrombin
Also Read: MCQ on Cell Structure and Functions
FAQs on Blood
______are regularly shaped cells with granules in the cytoplasm.
Granulocytes
White blood cells are also called as
Leucocytes
_____blood cells protect the body from infection.
White
Varieties of the blood cells are
Erythrocytes or RBC’s, Leucocytes or WBC’s and Thrombocytes or Platelets
The life span of an RBC is
120 days
Wandering cells is another name for
Leucocytes
Prothrombin + calcium ions +______= Thrombin
Thromboplastin
A person with blood group’O’ is a universal
Donor
Cell fragments formed by the splintering of megakaryocytes are called
Platelets
Monocytes that roam the tissues and gather at sites of infection or inflammation are called
Phagocytes
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