Biology

Human Immunity and Blood

2,051 Questions

Human immunity and blood questions cover the physiological mechanisms protecting the body against diseases and the components of blood. Topics include blood groups, cell mediated immunity, monoclonal antibodies, and blood coagulation. These biology topics frequently appear in general science sections of competitive exams.

Blood groupsCell mediated immunityMonoclonal antibodiesBlood coagulationCancer immunology

Human Immunity and Blood Questions

Multiple choice

Which type of white blood cell is responsible for engulfing and destroying foreign particles?

  1. Neutrophils

  2. Lymphocytes

  3. Monocytes

  4. Eosinophils
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Neutrophils are the most abundant type of white blood cell and are responsible for phagocytosis, the process of engulfing and destroying foreign particles.

Multiple choice

Which type of white blood cell is responsible for producing antibodies?

  1. Neutrophils

  2. Lymphocytes

  3. Monocytes

  4. Eosinophils
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Lymphocytes are responsible for producing antibodies, which are proteins that bind to and neutralize foreign substances.

Multiple choice

What is an antigen?

  1. A protein that is produced by the immune system

  2. A foreign substance that triggers an immune response

  3. A type of white blood cell

  4. A substance that regulates the immune response
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

An antigen is a foreign substance, such as a bacterium, virus, or toxin, that triggers an immune response.

Multiple choice

Which type of immune response is responsible for destroying infected cells?

  1. Humoral immunity

  2. Cell-mediated immunity

  3. Innate immunity

  4. Adaptive immunity
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Cell-mediated immunity is responsible for destroying infected cells by releasing cytotoxic substances that kill the infected cells.

Multiple choice

Which type of immune response is responsible for producing antibodies?

  1. Humoral immunity

  2. Cell-mediated immunity

  3. Innate immunity

  4. Adaptive immunity
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Humoral immunity is responsible for producing antibodies, which bind to and neutralize foreign substances.

Multiple choice

Which of the following is not a type of white blood cell?

  1. Neutrophils

  2. Lymphocytes

  3. Monocytes

  4. Platelets
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Platelets are not a type of white blood cell. They are involved in blood clotting.

Multiple choice

Which of the following is not a type of antibody?

  1. IgG

  2. IgA

  3. IgM

  4. IgD
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

IgD is not a type of antibody. It is a type of immunoglobulin that is found on the surface of B cells.

Multiple choice

Which of the following is a type of leukemia characterized by the rapid growth of abnormal lymphocytes?

  1. Acute Lymphoblastic Leukemia

  2. Acute Myeloid Leukemia

  3. Chronic Lymphocytic Leukemia

  4. Chronic Myeloid Leukemia
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Acute Lymphoblastic Leukemia (ALL) is a type of leukemia that affects the lymphoid cells, which are a type of white blood cell. It is characterized by the rapid growth of abnormal lymphocytes, leading to a high count of these cells in the blood and bone marrow.

Multiple choice

What is the primary treatment for acute lymphoblastic leukemia in children?

  1. Chemotherapy

  2. Radiation Therapy

  3. Stem Cell Transplant

  4. Targeted Therapy
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Chemotherapy is the primary treatment for acute lymphoblastic leukemia in children. It involves the use of powerful drugs to kill leukemia cells and achieve remission.

Multiple choice

Which blood disorder is characterized by the overproduction of white blood cells?

  1. Leukemia

  2. Anemia

  3. Thrombocytopenia

  4. Hemophilia
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Leukemia is a blood disorder characterized by the overproduction of white blood cells. These abnormal white blood cells can interfere with the normal function of the immune system and lead to various complications.

Multiple choice

What is the most common type of leukemia in adults?

  1. Acute Lymphoblastic Leukemia

  2. Acute Myeloid Leukemia

  3. Chronic Lymphocytic Leukemia

  4. Chronic Myeloid Leukemia
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Chronic Lymphocytic Leukemia (CLL) is the most common type of leukemia in adults. It is characterized by the accumulation of abnormal lymphocytes in the blood, bone marrow, and lymph nodes.

Multiple choice

What is the primary treatment for sickle cell anemia?

  1. Blood Transfusions

  2. Hydroxyurea

  3. Stem Cell Transplant

  4. Iron Supplementation
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Hydroxyurea is the primary treatment for sickle cell anemia. It is a medication that helps prevent the sickling of red blood cells and reduces the frequency and severity of complications.

Multiple choice

Which of the following is a type of leukemia characterized by the rapid growth of abnormal myeloid cells?

  1. Acute Lymphoblastic Leukemia

  2. Acute Myeloid Leukemia

  3. Chronic Lymphocytic Leukemia

  4. Chronic Myeloid Leukemia
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Acute Myeloid Leukemia (AML) is a type of leukemia characterized by the rapid growth of abnormal myeloid cells, which are a type of white blood cell. It is an aggressive form of leukemia that requires prompt treatment.

Multiple choice

What is the primary treatment for chronic lymphocytic leukemia?

  1. Chemotherapy

  2. Radiation Therapy

  3. Stem Cell Transplant

  4. Targeted Therapy
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Targeted therapy is the primary treatment for chronic lymphocytic leukemia. These drugs specifically target the abnormal proteins or molecules involved in the growth and survival of leukemia cells.

Multiple choice

Which blood type is known as the universal donor?

  1. A+

  2. O+

  3. B+

  4. AB+
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Blood type O+ is known as the universal donor because it can be safely transfused to patients of all blood types.