Chapter 13

A foreign molecule that causes a specific immune response is a(n)

• PAMP.

• antigen.

• antibody.

• marker.

Acquired specific immunity involves the response of

• B and T lymphocytes.

• skin barriers.

• lysozyme.

• mucous membranes.

The histocompatibility complex proteins function in

• recognition of self.

• antibody proliferation.

• B-cell maturation.

• T-cell maturation.

MHC molecules are found on each of the following cells except

• red blood cells.

• leukocytes.

• eosinophils.

• epithelial cells.

The molecular fragment on an antigen molecule that a lymphocyte recognizes and responds to is called a(n)

• epitope.

• hapten.

• antigen binding site.

• variable region.

Antigens that elicit allergic reactions are called

• allergens.

• superantigens.

• heterophilic antigens.

• autoantigens.

The most significant cells in graft rejection are

• cytotoxic T cells.

• helper T cells.

• suppressor T cells.

• natural killer (NK) cells.

An example of artificial passive immunity would be

• giving a person immune serum globulins to chickenpox virus after exposure to the disease.

• chickenpox infection followed by lifelong immunity.

• chickenpox vaccine which triggers extended immunity to chickenpox.

• a fetus acquiring maternal IgG to the chickenpox virus across the placenta.

All nucleated cells contain___.

• class I MHC

• class II MHC

• secretory antibodies

• IgE receptors

Antibody molecules circulate in lymph, blood, and tissue fluids.

• True

• false