Biology

Human Immunity and Blood

2,096 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 of the following is NOT a type of immunological memory?

  1. B cell memory.

  2. T cell memory.

  3. Innate memory.

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

Innate memory is not a type of immunological memory. Innate immunity is the body's first line of defense against infection and does not involve immunological memory.

Multiple choice

Which of the following is NOT a type of immunological memory cell?

  1. Memory B cells.

  2. Memory T cells.

  3. Plasma cells.

  4. Effector memory cells.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Plasma cells are not a type of immunological memory cell. Plasma cells are a type of B cell that produces antibodies.

Multiple choice

What is the role of dendritic cells in immunological memory?

  1. They help to activate B cells and T cells.

  2. They help to differentiate B cells into plasma cells.

  3. They help to promote the survival of memory B cells and T cells.

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

Dendritic cells play a number of roles in immunological memory, including helping to activate B cells and T cells, helping to differentiate B cells into plasma cells, and helping to promote the survival of memory B cells and T cells.

Multiple choice

Which of the following is NOT a type of immune response?

  1. Innate immunity

  2. Adaptive immunity

  3. Humoral immunity

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

Humoral immunity is not a type of immune response. It is a component of adaptive immunity that involves the production of antibodies.

Multiple choice

What is the role of B cells in the immune system?

  1. To produce antibodies

  2. To kill infected cells

  3. To help T cells produce antibodies

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

B cells play a crucial role in the immune system by producing antibodies, which are proteins that recognize and neutralize foreign invaders.

Multiple choice

Which of the following is NOT a type of antibody?

  1. IgG

  2. IgA

  3. IgM

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

IgE is not a type of antibody. It is a type of immunoglobulin that is involved in allergic reactions.

Multiple choice

Which of the following is NOT a type of phagocytic cell?

  1. Macrophages

  2. Neutrophils

  3. Eosinophils

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

Basophils are not phagocytic cells. They are a type of white blood cell that is involved in allergic reactions.

Multiple choice

Which of the following is NOT a type of cytokine?

  1. Interleukin-1

  2. Interleukin-2

  3. Interleukin-6

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

Interferon is not a type of cytokine. It is a type of protein that is produced by cells in response to viral infection.

Multiple choice

Which of the following is NOT a component of the complement system?

  1. C3

  2. C4

  3. C5

  4. C6
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

C6 is not a component of the complement system. It is a component of the coagulation cascade.

Multiple choice

What is the term for a severe allergic reaction that can be life-threatening?

  1. Anaphylaxis

  2. Asthma attack

  3. Hay fever

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

Anaphylaxis is a severe allergic reaction that can be life-threatening and requires immediate medical attention.

Multiple choice

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

  1. Neutrophils

  2. Lymphocytes

  3. Platelets

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

Platelets are not white blood cells, they are involved in blood clotting.

Multiple choice

Which type of lymphocyte is responsible for producing antibodies?

  1. T cells

  2. B cells

  3. Natural killer cells

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

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

Multiple choice

Which type of cell is responsible for presenting antigens to T cells?

  1. Neutrophils

  2. Lymphocytes

  3. Dendritic cells

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

Dendritic cells are antigen-presenting cells that capture and process antigens and present them to T cells.

Multiple choice

Which type of cell is responsible for regulating the immune response?

  1. T cells

  2. B cells

  3. Natural killer cells

  4. Regulatory T cells
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Regulatory T cells are a type of T cell that helps to control the immune response and prevent autoimmune diseases.

Multiple choice

Which type of cell is responsible for producing memory cells?

  1. T cells

  2. B cells

  3. Natural killer cells

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

Both T cells and B cells can produce memory cells, which are long-lived cells that can quickly respond to a previously encountered antigen.