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CSS - PMS - CCE - PCS - General Science Practice

Blood System – Cells, Circulation, Groups & Scientific Concepts MCQs

Explore the Blood System from a General Science perspective, including blood cells, plasma, hemoglobin, circulation, blood groups, Rh factor, clotting, immunity and related scientific concepts. Ideal for CSS, PMS, PPSC, FPSC, CCE and PCS objective examination preparation.

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Blood System – Cells, Circulation, Groups & Scientific Concepts

Blood System – Cells, Circulation, Groups & Scientific Concepts MCQs With Answers

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CSS - PMS - CCE - PCS - General Science Blood System
Most erythropoietin in adults is produced by the:
A. Spleen
B. Pancreas
C. Thymus
D. Kidneys
Read Theory
Correct Answer: D
Adult kidneys are the major EPO source.
CSS - PMS - CCE - PCS - General Science Blood System
The hormone that strongly stimulates red blood cell production is:
A. Thyroxine
B. Insulin
C. Erythropoietin
D. Aldosterone
Read Theory
Correct Answer: C
Erythropoietin stimulates erythropoiesis.
CSS - PMS - CCE - PCS - General Science Blood System
Red blood cell production is called:
A. Erythropoiesis
B. Hemostasis
C. Leukopoiesis
D. Hemolysis
Read Theory
Correct Answer: A
Erythropoiesis means RBC formation.
CSS - PMS - CCE - PCS - General Science Blood System
The average lifespan of a circulating red blood cell is about:
A. 365 days
B. 120 days
C. 12 days
D. 30 days
Read Theory
Correct Answer: B
RBC lifespan is about 120 days.
CSS - PMS - CCE - PCS - General Science Blood System
Mature human red blood cells normally lack a:
A. Cell membrane
B. Hemoglobin molecule
C. Nucleus
D. Cytoplasm
Read Theory
Correct Answer: C
Mature RBCs lack a nucleus.
CSS - PMS - CCE - PCS - General Science Blood System
The oxygen-carrying pigment in red blood cells is:
A. Melanin
B. Myoglobin
C. Hemoglobin
D. Bilirubin
Read Theory
Correct Answer: C
Hemoglobin carries oxygen.
CSS - PMS - CCE - PCS - General Science Blood System
The most abundant formed elements in normal human blood are:
A. Lymphocytes
B. Platelets
C. Neutrophils
D. Red blood cells
Read Theory
Correct Answer: D
RBCs greatly outnumber other formed elements.
CSS - PMS - CCE - PCS - General Science Blood System
Which blood component is best identified by the following principal role: include antibodies and various transport proteins?
A. Globulins
B. Eosinophils
C. Monocytes
D. Neutrophils
Read Theory
Correct Answer: A
The blood component matching 'include antibodies and various transport proteins' is Globulins.
CSS - PMS - CCE - PCS - General Science Blood System
Which principal role is correctly associated with Globulins?
A. include antibodies and various transport proteins
B. is the liquid matrix carrying proteins, nutrients, hormones and wastes
C. is converted to fibrin during coagulation
D. release mediators such as histamine
Read Theory
Correct Answer: A
Globulins is associated with include antibodies and various transport proteins.
CSS - PMS - CCE - PCS - General Science Blood System
Which blood component is best identified by the following principal role: contributes strongly to plasma oncotic pressure?
A. Red blood cells
B. Eosinophils
C. Albumin
D. Hemoglobin
Read Theory
Correct Answer: C
The blood component matching 'contributes strongly to plasma oncotic pressure' is Albumin.
CSS - PMS - CCE - PCS - General Science Blood System
Which principal role is correctly associated with Albumin?
A. can enter tissues and differentiate into macrophages
B. include antibodies and various transport proteins
C. mediate adaptive immune responses
D. contributes strongly to plasma oncotic pressure
Read Theory
Correct Answer: D
Albumin is associated with contributes strongly to plasma oncotic pressure.
CSS - PMS - CCE - PCS - General Science Blood System
Which blood component is best identified by the following principal role: is converted to fibrin during coagulation?
A. Fibrinogen
B. Lymphocytes
C. Neutrophils
D. Monocytes
Read Theory
Correct Answer: A
The blood component matching 'is converted to fibrin during coagulation' is Fibrinogen.
CSS - PMS - CCE - PCS - General Science Blood System
Which principal role is correctly associated with Fibrinogen?
A. can enter tissues and differentiate into macrophages
B. include antibodies and various transport proteins
C. binds and transports oxygen in red blood cells
D. is converted to fibrin during coagulation
Read Theory
Correct Answer: D
Fibrinogen is associated with is converted to fibrin during coagulation.
CSS - PMS - CCE - PCS - General Science Blood System
Which blood component is best identified by the following principal role: binds and transports oxygen in red blood cells?
A. Hemoglobin
B. Fibrinogen
C. Plasma
D. Globulins
Read Theory
Correct Answer: A
The blood component matching 'binds and transports oxygen in red blood cells' is Hemoglobin.
CSS - PMS - CCE - PCS - General Science Blood System
Which principal role is correctly associated with Hemoglobin?
A. binds and transports oxygen in red blood cells
B. is converted to fibrin during coagulation
C. participate in primary hemostasis and blood clot formation
D. transport oxygen mainly through hemoglobin
Read Theory
Correct Answer: A
Hemoglobin is associated with binds and transports oxygen in red blood cells.
CSS - PMS - CCE - PCS - General Science Blood System
Which blood component is best identified by the following principal role: is the liquid matrix carrying proteins, nutrients, hormones and wastes?
A. Monocytes
B. Eosinophils
C. Albumin
D. Plasma
Read Theory
Correct Answer: D
The blood component matching 'is the liquid matrix carrying proteins, nutrients, hormones and wastes' is Plasma.
CSS - PMS - CCE - PCS - General Science Blood System
Which principal role is correctly associated with Plasma?
A. release mediators such as histamine
B. is the liquid matrix carrying proteins, nutrients, hormones and wastes
C. include antibodies and various transport proteins
D. mediate adaptive immune responses
Read Theory
Correct Answer: B
Plasma is associated with is the liquid matrix carrying proteins, nutrients, hormones and wastes.
CSS - PMS - CCE - PCS - General Science Blood System
Which blood component is best identified by the following principal role: release mediators such as histamine?
A. Monocytes
B. Albumin
C. Basophils
D. Lymphocytes
Read Theory
Correct Answer: C
The blood component matching 'release mediators such as histamine' is Basophils.
CSS - PMS - CCE - PCS - General Science Blood System
Which principal role is correctly associated with Basophils?
A. can enter tissues and differentiate into macrophages
B. participate in primary hemostasis and blood clot formation
C. release mediators such as histamine
D. rapidly phagocytose many bacteria during acute infection
Read Theory
Correct Answer: C
Basophils is associated with release mediators such as histamine.
CSS - PMS - CCE - PCS - General Science Blood System
Which blood component is best identified by the following principal role: are prominent in parasitic infections and allergic responses?
A. Lymphocytes
B. Albumin
C. Eosinophils
D. Globulins
Read Theory
Correct Answer: C
The blood component matching 'are prominent in parasitic infections and allergic responses' is Eosinophils.
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