Chapter 22 (II) Quiz (Adaptive Immunity)

Steps in antigen presentation include which of these?

Antigens are digested. Antigen fragments appear on the antigen-presenting cell's surface. Phagocytic antigen-presenting cells engulf pathogens.

Which of the following cells has a CD8 marker?

Cytotoxic T cell

Interleukin I (IL-1) promotes proliferation of which type of lymphocyte?

Helper T cell

First antibody to be secreted during an initial exposure

IgM

_____________________ cells produce and secrete antibodies.

Plasma

Which of the following cells has a Class-I MHC marker in its plasma membrane?

Somatic (body) cell

IgG crosses the placenta between

a mother and a fetus during development

Class II MHC proteins are present in the plasma membrane only when

an antigen-presenting cell has engulfed and is processing an antigen.

The lymphocytes that enter tissues and directly attack antigens

are cytotoxic T Cells

Cytotoxic T cells involved in

cell-mediated immunity

CD8 markers are to ________ T cells as CD4 markers are to ________ T cells.

cytoxic; helper

Another term for antibodies is

immunoglobulins.

IgE attach to and sensitize

mast cells and basophils

IgG are most abundant and are responsible for

resistance against many viruses, bacteria, and bacterial toxins are

IgD are found on the surface of B cells and

that may activate antibody production

___________________ immunity develops when an individual receives an immunization/vaccination.

Artificially acquired active

Found mainly in exocrine gland secretions

IgA

Activates B cells

IgD

Provides protection against parasitic worms

IgE

Most abundant antibody

IgG

Anti-A and Anti-B antibodies of the ABO blood groups belong to which class of antibodies?

IgM Anibodies class

During the primary response, which antibody peaks sooner? During the secondary response, which antibody level is higher?

IgM; IgG

___________________ is the ability to carry out adaptive immune responses.

Immunocompetence

A crime scene investigator found that a biological fluid sample contains a large amount of IgA-type antibody. This fluid is probably

Tears

IgE sensitizes cells to

allergens

When an antigen is bound to a Class I MHC molecule, it can stimulate a ________ cell.

cytotoxic T

Antigen-presenting cells (APCs) process

exogenous antigens.

B cells are primarily activated by the activities of

helper T cells.

Martha had a heart transplant. In order to keep her body from rejecting the transplant she takes

immunosuppressive drugs.

where do B cells develop immunocompetence

in the red bone marrow.

Cytotoxic T cells respond to foreign antigens presented by

infected body cells.

Immunity that is genetically determined and present at birth is called ________ immunity.

innate

Hormones that regulate the activity of B cells and T cells and enhance nonspecific defense are called

interleukins

Immunity that results from antibodies that pass through the placenta from mother to fetus is called ________ immunity.

naturally acquired passive

The first line of cellular defense against pathogens are the

phagocytes.

Helper T cells do all of the following except

provide a rapid response to a future exposure to the antigen.

what is true of the secondary response of humoral immunity

results in much higher antibody titers than in the primary response. results in much quicker rise in antibody titers. produces more effective antibodies. depends on memory B cells.

Memory cells do not proliferate/differentiate during

the first exposure to a foreign antigen.

Passive immunity is produced by

the transfer of antibodies.

Helper T cells do all of the following

trigger B-cell division, plasma cell maturation, and antibody production. enhance production of memory and cytotoxic T cells. attract macrophages to the affected area. enhance nonspecific defenses.

All of the following are true of the secondary response of humoral immunity except that it

weakens quickly because memory B cells only survive for a year or two.