51 Important GK Questions on Human Blood for Competitive Exams | GK Questions with Answers | AISSEE | KV | JNV | Entrance Exam

What is the primary function of blood in the human body?

Answer: The primary function of blood is to transport oxygen and nutrients to cells and remove waste products.

What is the pH range of normal human blood?

Answer: The pH range of normal human blood is approximately 7.35 to 7.45.

What is the percentage of water in human blood?

Answer: Blood is approximately 90% water.

Which element gives blood its red color?

Answer: Hemoglobin, a protein containing iron, gives blood its red color.

What is the average volume of blood in an adult human body?

Answer: The average volume of blood in an adult human body is about 5 liters.

Which type of blood cells are responsible for oxygen transport in the blood?

Answer: Red blood cells (erythrocytes) are responsible for oxygen transport.

What is the primary function of white blood cells (leukocytes)?

Answer: White blood cells primarily function to fight infection and foreign invaders.

Which component of blood is responsible for clotting?

Answer: Platelets (thrombocytes) are responsible for blood clotting.

What is the process by which blood cells are formed?

Answer: Hematopoiesis is the process by which blood cells are formed in the bone marrow.

What is the medical term for a decrease in the number of red blood cells or a decrease in the amount of hemoglobin in the blood?

Answer: Anemia is the medical term for this condition.

Which blood type is considered the universal donor?

Answer: Blood type O negative is considered the universal donor.

Which blood type is considered the universal recipient?

Answer: Blood type AB positive is considered the universal recipient.

What is the Rh factor in blood typing?

Answer: The Rh factor is a protein found on the surface of red blood cells. It can be either Rh-positive or Rh-negative.

What happens when an Rh-negative mother carries an Rh-positive fetus?

Answer: If an Rh-negative mother carries an Rh-positive fetus, there can be a risk of hemolytic disease of the newborn (HDN) in subsequent pregnancies.

What is the most common blood type in the United States?

Answer: Blood type O positive is the most common blood type in the United States.

What is the rarest blood type?

Answer: Blood type AB negative is considered the rarest blood type.

What is the function of plasma in blood?

Answer: Plasma is the liquid component of blood that carries nutrients, hormones, and waste products.

What is the normal range for a person's platelet count?

Answer: The normal range for platelet count in a healthy individual is between 150,000 and 450,000 platelets per microliter of blood.

What is the purpose of the ABO blood group system?

Answer: The ABO blood group system determines the presence or absence of A and B antigens on the surface of red blood cells.

What is the most common ABO blood type in the world?

Answer: Blood type O is the most common ABO blood type in the world.

Which type of white blood cells are responsible for antibody production?

Answer: B lymphocytes (B cells) are responsible for antibody production.

What is the term for the process of blood cell formation in the bone marrow?

Answer: Hematopoiesis is the term for the process of blood cell formation.

What is the condition characterized by an abnormal increase in the number of red blood cells?

Answer: Polycythemia is the condition characterized by an abnormal increase in red blood cells.

What is the medical term for a high level of glucose (sugar) in the blood?

Answer: Hyperglycemia is the medical term for a high level of glucose in the blood.

Which organ in the human body is responsible for filtering and removing damaged blood cells?

Answer: The spleen is responsible for filtering and removing damaged blood cells.

What is the function of hemostasis in the blood?

Answer: Hemostasis is the process of stopping bleeding by forming blood clots.

Which gas binds to hemoglobin in red blood cells for oxygen transport?

Answer: Oxygen binds to hemoglobin in red blood cells for transport.

What is the condition where blood pressure is consistently elevated?

Answer: Hypertension, or high blood pressure, is the condition where blood pressure is consistently elevated.

What is the medical term for low blood pressure?

Answer: Hypotension is the medical term for low blood pressure.

Which blood cells are responsible for phagocytosis, engulfing and destroying foreign invaders?

Answer: White blood cells known as neutrophils are responsible for phagocytosis.

What is the role of fibrin in blood clot formation?

Answer: Fibrin is a protein that forms a mesh-like structure to trap blood cells, leading to clot formation.

What is the primary function of platelets in blood clotting?

Answer: Platelets help initiate clotting by adhering to damaged blood vessels and forming a plug.

Which mineral is essential for the formation of hemoglobin in red blood cells?

Answer: Iron is essential for the formation of hemoglobin.

What is the medical term for a decrease in the number of white blood cells?

Answer: Leukopenia is the medical term for a decrease in white blood cells.

Which type of white blood cells are responsible for coordinating the immune response?

Answer: T lymphocytes (T cells) are responsible for coordinating the immune response.

What is the process of red blood cell destruction called?

Answer: Hemolysis is the process of red blood cell destruction.

What is the function of erythropoietin (EPO) in the body?

Answer: Erythropoietin stimulates the production of red blood cells in the bone marrow.

What is the medical term for the formation of blood clots within a blood vessel?

Answer: Thrombosis is the medical term for this condition.

What is the purpose of a blood type crossmatch?

Answer: A blood type crossmatch is performed to ensure compatibility between the donor and recipient before a blood transfusion.

What is the medical term for inflammation of the blood vessels?

Answer: Vasculitis is the medical term for inflammation of blood vessels.

Which blood cell type is most abundant in the blood?

Answer: Red blood cells (erythrocytes) are the most abundant blood cell type.

What is the medical term for an abnormally low red blood cell count?

Answer: Anemia is the medical term for an abnormally low red blood cell count.

What is the term for a hereditary blood disorder that affects the ability of blood to clot?

Answer: Hemophilia is the term for this condition.

What is the function of albumin in blood plasma?

Answer: Albumin in blood plasma helps maintain osmotic pressure and transport various substances.

What is the primary function of basophils in the blood?

Answer: Basophils are involved in allergic reactions and release histamine.

What is the condition characterized by an overproduction of red blood cells due to excessive EPO production?

Answer: Polycythemia vera is the condition characterized by this.

Which blood component is responsible for maintaining blood pressure and fluid balance in the body?

Answer: Blood proteins, including albumin, help maintain blood pressure and fluid balance.

What is the role of monocytes in the immune system?

Answer: Monocytes are white blood cells that can transform into macrophages and play a role in phagocytosis.

What is the condition where there is a deficiency of platelets in the blood?

Answer: Thrombocytopenia is the condition characterized by a deficiency of platelets.

Which blood cells are the smallest in size?

Answer: Platelets are the smallest blood cells.

What is the medical term for a condition where there is an excessive number of white blood cells in the blood?

Answer: Leukocytosis is the medical term for this condition.