Exam 33: Adaptive Immunity

Name the classes of antibodies, and give the function of each.

Inactive B cells produce antibodies that insert on their plasma membranes to serve as antigen receptors.

Humoral immunity occurs within the plasma.

Which of the following can activate, or turn on, an inactive B cell?

The combining site on an antibody determines the specificity of that antibody for an antigen.

Haptens are sometimes called incomplete antigens.

B cell mechanisms are classified as _____ immunity.

Once released from the bone marrow, the B cells migrate to the bursa of Fabricius to complete their development.

T cells, by definition, are lymphocytes that have passed through the thyroid gland.

Which antibody has 10 antigen-binding sites?

Compare and contrast the development of B cells and T cells.

An antibody molecule must have at least two antigen-binding sites.

If a blood test indicated that a person had a high level of IgM antibodies in the blood, it could be concluded that:

Why is it difficult to predict the total number of AIDS cases?

Describe the development, activation, and functions of T cells.

Suppressor T cells function by inhibiting T cell formation.

Antigens are macromolecules that induce the immune system to take certain actions.

A mother passing antibodies to the fetus is an example of natural passive immunity.

Explain the terms natural immunity, artificial immunity, active immunity, and passive immunity. Give an example of natural passive immunity.

In humans, bursa equivalent tissue is the site for B-cell development.