MCQ Questions on Blood: Components and Functions
Frequently Asked MCQ quiz on the Blood: Components and Functions Questions with Answers – MCQ Quiz for Competitive Exam Preparation – These questions given will be useful for competitive exams preparation. We will be updating more mcq regularly, please follow our website regularly.
What is the primary function of red blood cells (erythrocytes)?
a) Immune defense
b) Blood clotting
c) Oxygen transport
d) Antibody production
Answer: c) Oxygen transport
Which component of blood is responsible for carrying oxygen from the lungs to the body tissues?
a) Red blood cells
b) White blood cells
c) Platelets
d) Plasma
Answer: a) Red blood cells
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What is the primary function of white blood cells (leukocytes)?
a) Oxygen transport
b) Immune defense
c) Clotting
d) Hormone transport
Answer: b) Immune defense
Which type of white blood cell is primarily responsible for phagocytosis and engulfing pathogens?
a) Lymphocytes
b) Neutrophils
c) Eosinophils
d) Basophils
Answer: b) Neutrophils
What is the function of platelets (thrombocytes) in blood?
a) Oxygen transport
b) Immune defense
c) Blood clotting
d) pH regulation
Answer: c) Blood clotting
Which blood component is primarily involved in the formation of blood clots?
a) Red blood cells
b) White blood cells
c) Platelets
d) Plasma
Answer: c) Platelets
What is the liquid component of blood?
a) Red blood cells
b) White blood cells
c) Platelets
d) Plasma
Answer: d) Plasma
What percentage of blood volume does plasma constitute?
a) Approximately 20%
b) Approximately 30%
c) Approximately 40%
d) Approximately 50%
Answer: c) Approximately 40%
Which of the following is not a component of plasma?
a) Water
b) Electrolytes
c) Hormones
d) Red blood cells
Answer: d) Red blood cells
Which component of plasma plays a vital role in maintaining blood pressure and volume?
a) Water
b) Electrolytes
c) Proteins
d) Hormones
Answer: a) Water
Which plasma protein is primarily responsible for maintaining osmotic pressure and preventing fluid leakage from blood vessels?
a) Albumin
b) Globulins
c) Fibrinogen
d) Hemoglobin
Answer: a) Albumin
What is the function of fibrinogen in blood plasma?
a) Transport of lipids
b) Clot formation
c) Immune response
d) pH regulation
Answer: b) Clot formation
Which component of plasma plays a crucial role in immune defense by producing antibodies?
a) Albumin
b) Globulins
c) Fibrinogen
d) Hemoglobin
Answer: b) Globulins
What is the primary function of hemoglobin in red blood cells?
a) Blood clotting
b) Immune defense
c) Oxygen transport
d) Hormone production
Answer: c) Oxygen transport
How many types of white blood cells are there in the human body?
a) Two
b) Three
c) Five
d) Seven
Answer: c) Five
Which type of white blood cell is responsible for producing antibodies?
a) Lymphocytes
b) Neutrophils
c) Eosinophils
d) Basophils
Answer: a) Lymphocytes
What is the primary function of neutrophils?
a) Phagocytosis
b) Production of antibodies
c) Allergic reactions
d) Blood clotting
Answer: a) Phagocytosis
Which type of white blood cell increases in response to parasitic infections and allergic reactions?
a) Lymphocytes
b) Neutrophils
c) Eosinophils
d) Basophils
Answer: c) Eosinophils
What is the function of basophils in the immune system?
a) Phagocytosis
b) Production of antibodies
c) Release of histamine
d) Destruction of tumor cells
Answer: c) Release of histamine
Which white blood cells are involved in the formation of pus during infections?
a) Lymphocytes
b) Neutrophils
c) Eosinophils
d) Basophils
Answer: b) Neutrophils
What is the function of monocytes in the immune system?
a) Phagocytosis
b) Production of antibodies
c) Release of histamine
d) Destruction of tumor cells
Answer: a) Phagocytosis
Which plasma component is primarily responsible for blood clotting?
a) Albumin
b) Globulins
c) Fibrinogen
d) Hemoglobin
Answer: c) Fibrinogen
Which blood component is involved in transporting nutrients, waste products, hormones, and gases throughout the body?
a) Red blood cells
b) White blood cells
c) Platelets
d) Plasma
Answer: d) Plasma
Which type of white blood cell secretes chemicals to promote inflammation and attract other immune cells to the site of infection?
a) Lymphocytes
b) Neutrophils
c) Eosinophils
d) Basophils
Answer: b) Neutrophils
What is the primary function of platelets in blood?
a) Oxygen transport
b) Immune defense
c) Blood clotting
d) Hormone production
Answer: c) Blood clotting
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