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Platelets and Thalassemia Quiz

Total questions: 20

Worksheet time: 10mins

Name
Class
Date
1.

Main function of platelets is

a)

Oxygen transport

b)

Blood clotting

c)

Immunity

d)

Hormone secretion

2.

Platelets are formed from

a)

RBCs

b)

WBCs

c)

Megakaryocytes

d)

Lymphocytes

3.

First step of platelet function in hemostasis is

a)

Aggregation

b)

Adhesion

c)

Clot retraction

d)

Fibrinolysis

4.

Which substance released by platelets helps in clot formation?

a)

ADP

b)

Heparin

c)

Histamine

d)

Plasmin

5.

Platelets help coagulation by providing

a)

Calcium only

b)

Phospholipid surface

c)

Hemoglobin

d)

Iron

6.

Thalassemia is a disorder of

a)

RBC membrane

b)

WBC production

c)

Hemoglobin synthesis

d)

Platelet function

7.

Thalassemia mainly affects synthesis of

a)

Heme

b)

Globin chains

c)

Iron

d)

Vitamin B12

8.

Beta thalassemia involves decreased production of

a)

Alpha globin

b)

Beta globin

c)

Gamma globin

d)

Delta globin

9.

Common sign of severe thalassemia is

a)

Hypertension

b)

Splenomegaly

c)

Polycythemia

d)

Leukocytosis

10.

Heme–heme interaction occurs in

a)

Myoglobin

b)

Hemoglobin

c)

Albumin

d)

Transferrin

11.

Heme–heme interaction helps in

a)

Oxygen storage

b)

Cooperative oxygen binding

c)

CO2 transport

d)

Iron absorption

12.

Because of heme–heme interaction, oxygen dissociation curve is

a)

Linear

b)

Sigmoid

c)

Hyperbolic

d)

Flat

13.

Neutrophils are mainly involved in

a)

Antibody production

b)

Phagocytosis

c)

Allergy

d)

Clotting

14.

Most abundant WBC in blood is

a)

Eosinophil

b)

Basophil

c)

Neutrophil

d)

Lymphocyte

15.

Neutrophils are also called

a)

Mononuclear cells

b)

Polymorphonuclear cells

c)

Agranulocytes

d)

Mast cells

16.

Neutrophils migrate to site of infection by

a)

Pinocytosis

b)

Diapedesis

c)

Endocytosis

d)

Osmosis

17.

Polycythemia means

a)

Low RBC count

b)

High RBC count

c)

Low platelet count

d)

Low hemoglobin

18.

Polycythemia vera is a disorder of

a)

Bone marrow

b)

Plasma proteins

c)

Platelets only

d)

Hemoglobin structure

19.

Main risk in polycythemia is

a)

Infection

b)

Thrombosis

c)

Bleeding

d)

Anemia

20.

High altitude can cause

a)

Anemia

b)

Secondary polycythemia

c)

Leukemia

d)

Thrombocytopenia