21. The Immune System

Differentiate between a primary and a secondary immune response. Which is more rapid and why?

More than one choice may apply.

Which of these antibody classes is usually arranged as a pentamer?

a. IgG

b. IgM

c IgA

d. IgD

Your friend tests her snake-wrangling skills on an eastern diamondback rattlesnake, and is bitten and envenomated (injected with the snake's venom). In the emergency department, doctors administer the antivenin CroFab, which contains antibodies to the toxins in snake venom. Is this an example of active or passive immunity? Will this confer any lasting protection to your friend?

All of the following are postulates of the clonal selection theory EXCEPT:

Clonal selection:

Which of the following statements is FALSE?

How do antibodies help defend the body?

Give one example of each type of immunity: innate immunity, naturally acquired active immunity, artificially acquired active immunity, artificially acquired passive immunity, and naturally acquired passive immunity.

Name the five antibody classes and describe where each is most likely to be found in the body.

Which of the following is not a role of T_H cells?

a. Stimulation of macrophages

b. Activation of naïve T_C cells

c. Stimulation of naïve B cells

d. Stimulation of clonal selection

More than one choice may apply.

Which of the following antibody capabilities causes a transfusion reaction with A or B erythrocyte antigens?

a. Neutralization

b. Precipitation

c. Complement fixation

d. Agglutination