Quiz 3 - Health Challenges To The Immune System

Question 1

Which of the following cells is capable of engulfing pathogens and debris ?

A) T-cells
B) macrophages
C) mast cells
D) basophils

Answer 1

Macrophages

Question 2

The function of a natural killer cell is to?
A) phagocytose pathogens and debris 
B) regulate the function of T- cells
C) produce antibodies
D) kill virus -infected and cancer cells

Answer 2

Phagocytose pathogens and debris

Question 3

Inferferon Alpha:

A) activates the thymus
B) boosts the function of the lymph nodes
C) signals to macrophages
D) induces the production of antiviral proteins

Answer 3

Induces the production of anti viral proteins

Question 4

A molecule is isolated form the human body and studied. It is found to react with antibodies on B cells. Further testing reveals that the molecule is large and chemically diverse. Which of the following would best describe the molecule?

A) epitope
B) mimotop
C) antigen
D) immunogen

Answer 4

Antigen

Question 5

Which of the following cells is responsible for presenting the antigen to the immune cell?
A) lymphocytes
B) macrophages
C) Antibodies
D) B cells

Answer 5

Macrophages

Question 6

Both B and T cells are originally derived from cells of the:

A) lymph nodes
B) gut-associated lymphoid tissue
C) bone marrow
D) thymus

Answer 6

Bone marrow

Question 7

A 65 year old female is diagnosed with a bacterial infection of the respiratory system. Which of the following will most likely try to fight the antigen?

A) cytotoxic T cells
B) helper T cells
C) NK cells
D) B cells and antibodies

Answer 7

B cells and antibodies

Question 8

Humoral immunity refers to :

A) the circulation of antigen-presenting cells

B) the production of cell-signalling molecules

C) the production of circulating antibodies

D) the production of cytotoxic T cells

Answer 8

The production of circulating antibodies

Question 9

The predominant antibody of a typical primary immune response is:

A) IgM
B) IgA
C) IgE
D) IgG

Answer 9

IgM

Question 10

Increased age is associated with:

A) increased hypersensitivity responses
B) increased T cell function
C) decreased production of autoantibodies
D) decreased numbers of circulating immune complexes

Answer 10

Increased hypersensitivity responses