Immune System

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Class II MHC proteins are found on which of the following cell types?

antigen-presenting cells
all nucleated cells

a

Which class of MHC proteins presents exogenous antigens?

class I MHC proteins
class II MHC proteins

b

Class I MHC proteins are recognized by which of the following cell types (that are destined to become T cells)?

CD4
CD8

b

Which of the following types of cells display protein fragments produced by the cancer within them?

B cells
macrophages
dendritic cells
all nucleated cells

d

Which major class of lymphocytes become cytotoxic T cells?

CD8 cells
CD6 cells
CD4 cells

a

What constitutes the body’s first line of defense against disease?

the adaptive defense system
antimicrobial proteins and various phagocytic cells
intact skin and mucous membranes
inflammation

c

Which of the following is NOT a nonspecific internal defense against disease?

inflammation
T cells
NK cells
phagocytes

b

Which defense mechanism results in redness, heat, pain, and swelling?

antibody production
inflammation
phagocytosis
cell-mediated immunity

b

Which antimicrobial protein is produced by a virus-infected cell?

interferon
histamine
pyrogen
complement

a

Which of the following does NOT describe the adaptive immune response?

It has memory.
It is specific.
It occurs immediately after the body is challenged by foreign material.
It is systemic.

c

What mobilizes the adaptive defenses and provokes an immune response?

antigens
interferons
pyrogens
MHC proteins

a

Which cells engulf antigens and present fragments of them on their own surfaces where they can be recognized by cells that will deal with them?

dendritic cells
NK cells
T lymphocytes
plasma cells

a

Why are children given vaccinations?

to develop antibodies against various diseases
to activate the cell-mediated defense against pathogens
to see whether the immune system is capable of defense against disease
to develop a disease in a mild state rather than have it later on in a more serious state

a

Which cell of the immune system is absolutely required for an adaptive immune response?

cytotoxic T cell
antigen-presenting cell
helper T cell
B cell

c

What types of antigen are recognized by T cells?

bacterial antigens only
processed fragments of protein antigens displayed on surfaces of body cells
cancer antigens only
free antigens

b

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