01 - Composition, Haemopoiesis, Leucocytes and Plasma Proteins MCQS

Which of the following is a primary function of blood?

A. Transmission of electrical signals

B. Protection against pathogens

C. Digesting food

D. Absorption of nutrients

B

What is the main component of plasma by percentage?

A. Electrolytes

B. Water

C. Plasma proteins

D. Organic wastes

B

Haematocrit is used to determine the composition of blood by measuring the percentage of:

A. White blood cells

B. Plasma volume

C. Packed red blood cells

D. Platelets

C

Which of these blood elements is the most abundant in a normal blood sample?

A. Neutrophils

B. Basophils

C. Eosinophils

D. Monocytes

A

Which leukocyte is responsible for phagocytosis and increases during bacterial infections?

A. Lymphocytes

B. Basophils

C. Neutrophils

D. Eosinophils

C

Haemopoiesis is the process of blood cell formation from stem cells located in the:

A. Lymph nodes

B. Spleen

C. Bone marrow

D. Liver

C

Which component of plasma acts as a transport protein and regulates fluid composition?

A. Fibrinogen

B. Albumin

C. Globulin

D. Electrolytes

B

Which of the following is a plasma protein involved in blood clotting?

A. Albumin

B. Globulin

C. Fibrinogen

D. Hemoglobin

C

The function of globulins in blood plasma includes:

A. Blood clotting

B. Transporting hormones and vitamins

C. Regulating fluid pressure

D. Oxygen transport

B

Which function of blood helps in temperature regulation?

A. Acting as a buffer

B. Transporting humoral agents

C. Participating in coagulation

D. Assisting with thermoregulation

D

Blood transports regulatory substances like hormones to:

A. Maintain blood pressure

B. Facilitate coagulation

C. Target tissues and cells

D. Aid in digestion

C

Which of the following are considered "formed elements" in blood?

A. Erythrocytes, leucocytes, thrombocytes

B. Plasma and serum

C. Water and electrolytes

D. Only erythrocytes and plasma

A

Which layer is found at the top when blood is centrifuged in a haematocrit test?

A. Red blood cells

B. Plasma

C. White blood cells

D. Platelets

B

What is the correct order of leukocyte abundance in normal blood?

A. Lymphocytes > Monocytes > Eosinophils > Neutrophils > Basophils

B. Monocytes > Eosinophils > Basophils > Neutrophils > Lymphocytes

C. Neutrophils > Lymphocytes > Monocytes > Eosinophils > Basophils

D. Basophils > Eosinophils > Neutrophils > Lymphocytes > Monocytes

C

Which leukocyte is most likely to be elevated in cases of allergic reactions?

A. Neutrophils

B. Monocytes

C. Eosinophils

D. Basophils

C

Which leukocyte has a bilobed nucleus and large cytoplasmic granules containing histamine?

A. Neutrophil

B. Eosinophil

C. Basophil

D. Monocyte

C

What is the starting cell type in haemopoiesis from which all blood cells are derived?

A. Multipotent progenitor

B. Pluripotent stem cell

C. Lymphoid progenitor

D. Myeloid progenitor

B

During haemopoiesis, which progenitor cell gives rise to granulocytes?

A. Lymphoid progenitor

B. Myeloid progenitor

C. Pluripotent stem cell

D. Thrombocyte progenitor

B

What main component is removed from plasma to create serum?

A. Electrolytes

B. Water

C. Clotting factors

D. Proteins

C

Which of the following is a primary role of water in blood plasma?

A. Nutrient storage

B. Cellular communication

C. Temperature regulation

D. Protein synthesis

C

Organic wastes in plasma include all of the following except:

A. Urea

B. Uric acid

C. Lipids

D. Bilirubin

C

Which plasma protein is crucial for exerting osmotic pressure and maintaining blood volume?

A. Globulin

B. Albumin

C. Fibrinogen

D. Hemoglobin

B

Gamma globulins in blood plasma are primarily involved in:

A. Transporting iron

B. Blood clotting

C. Immune defence

D. Regulating blood pH

C