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 fetal red blood cell antigen is primarily responsible for inducing alloimmune hemolytic anemia?

  1. Rhesus (Rh) factor

  2. Kell antigen

  3. Duffy antigen

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

The Rh factor is the most common fetal red blood cell antigen that can induce alloimmune hemolytic anemia in pregnant women who lack this antigen.

Multiple choice

What is the recommended treatment for leukemia in children?

  1. Chemotherapy

  2. Radiation therapy

  3. Stem cell transplant

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The recommended treatment for leukemia in children includes chemotherapy, radiation therapy, stem cell transplant, and a combination of these approaches.

Multiple choice

Which type of cancer is characterized by the uncontrolled growth of cells in the blood-forming tissues?

  1. Leukemia

  2. Lymphoma

  3. Myeloma

  4. Hodgkin's Lymphoma
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Leukemia is a type of cancer that affects the blood-forming tissues, including the bone marrow and lymph nodes.

Multiple choice

What is the name of the treatment modality that uses the body's immune system to fight cancer?

  1. Immunotherapy

  2. Chemotherapy

  3. Radiotherapy

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

Immunotherapy is a treatment modality that uses the body's immune system to fight cancer by enhancing its ability to recognize and attack cancer cells.

Multiple choice

Which type of cancer is characterized by the uncontrolled growth of cells in the blood-forming tissues?

  1. Leukemia

  2. Lymphoma

  3. Myeloma

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Leukemia, lymphoma, and myeloma are all types of cancer that arise from the blood-forming tissues. Leukemia affects the white blood cells, lymphoma affects the lymph nodes and other lymphoid tissues, and myeloma affects the plasma cells.

Multiple choice

Which of the following is responsible for the production of antibodies?

  1. B cells

  2. T cells

  3. Macrophages

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

B cells are responsible for the production of antibodies, which are proteins that recognize and bind to specific antigens.

Multiple choice

Which type of T cell is responsible for killing infected cells?

  1. Cytotoxic T cells

  2. Helper T cells

  3. Regulatory T cells

  4. Memory T cells
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Cytotoxic T cells are responsible for killing infected cells by releasing cytotoxic molecules that induce apoptosis.

Multiple choice

What is the role of macrophages in the immune system?

  1. Antibody production

  2. Cell-mediated immunity

  3. Phagocytosis

  4. Inflammation
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Macrophages are phagocytic cells that engulf and destroy foreign particles, including bacteria, viruses, and cellular debris.

Multiple choice

Which of the following is responsible for the production of cytokines?

  1. B cells

  2. T cells

  3. Macrophages

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

T cells are responsible for the production of cytokines, which are small proteins that regulate the immune response.

Multiple choice

What is the role of the thymus in the immune system?

  1. Production of antibodies

  2. Maturation of T cells

  3. Phagocytosis

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

The thymus is a primary lymphoid organ where T cells mature and undergo selection to ensure self-tolerance.

Multiple choice

Which of the following is responsible for the production of memory cells?

  1. B cells

  2. T cells

  3. Macrophages

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

Both B cells and T cells can differentiate into memory cells, which provide long-term immunity to specific pathogens.

Multiple choice

What is the role of the spleen in the immune system?

  1. Production of antibodies

  2. Maturation of T cells

  3. Filtration of blood

  4. Storage of red blood cells
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The spleen is a secondary lymphoid organ that filters blood, removing pathogens and damaged cells.

Multiple choice

Which of the following is responsible for the production of natural killer cells?

  1. Bone marrow

  2. Thymus

  3. Spleen

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

Natural killer cells are produced in the bone marrow and are responsible for killing infected cells and tumor cells.

Multiple choice

What is the role of the complement system in the immune response?

  1. Antibody production

  2. Cell-mediated immunity

  3. Phagocytosis

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

The complement system is a group of proteins that work together to promote inflammation, enhance phagocytosis, and directly kill pathogens.

Multiple choice

Which of the following is responsible for the production of interferon?

  1. B cells

  2. T cells

  3. Macrophages

  4. Natural killer cells
Reveal answer Fill a bubble to check yourself
Correct answer
Explanation

Macrophages and natural killer cells produce interferon, a cytokine that inhibits viral replication and activates other immune cells.