Exam 43: The Immune System

A researcher is analyzing the immune response of a patient following the patient's exposure to an unknown agent while out of the country. The patient's blood is found to have a high proportion of lymphocytes with CD8 surface proteins. What is the likely cause?

Which of the following is True of active but not passive immunity?

The next questions refer to the following data on blood types. Case 1 Case 2 Case 3 Mother , , , Fetus , , , Figure 43.2 -In which of the cases could the mother exhibit an anti-Rh-factor reaction to the developing fetus?

Use the following information to answer the following questions. An otherwise healthy student in your class is infected with EBV, the virus that causes infectious mononucleosis. The same student had already been infected when she was a child, and she had merely experienced a mild sore throat and swollen lymph nodes in her neck. This time, though infected, she does not get sick. -B cells interacting with helper T cells are stimulated to differentiate when

Use the information below as background for the following questions. Immunodeficiencies may be genetic in origin. Two examples of these are Bruton's agammaglobulinemia, an X-linked disorder, and DiGeorge syndrome, caused by a deletion from chromosome 22. Bruton's results in underdeveloped B cells, while DiGeorge syndrome results in a missing or seriously underdeveloped thymus. -In the human disease known as lupus, there is an immune reaction against a patient's own DNA from broken or dying cells. This kind of response typifies which kind of irregularity?

Consider a pencil-shaped protein with two epitopes, Y (the "eraser" end)and Z (the "point" end). They are recognized by antibodies A1 and A2, respectively. Draw and label a picture showing the antibodies linking proteins into a complex that could trigger endocytosis by a macrophage.

Use the following information to answer the following questions. Cave art by early humans recognized the existence of the major signs of inflammation. -Clonal selection is an explanation for how

Use the following information to answer the following questions. Cave art by early humans recognized the existence of the major signs of inflammation. -Histamines trigger dilation of nearby blood vessels, and increase in their permeability. Which of the signs of inflammation are therefore associated with histamine release?

Which statement best describes the difference in responses of effector B cells (plasma cells)and cytotoxic T cells?

Naturally acquired passive immunity would involve the

A transfusion of type A blood given to a person who has type O blood would result in which of the following?

Why can normal immune responses be described as polyclonal?

Which statement about the complement system is True?

Use the following information to answer the following questions. An otherwise healthy student in your class is infected with EBV, the virus that causes infectious mononucleosis. The same student had already been infected when she was a child, and she had merely experienced a mild sore throat and swollen lymph nodes in her neck. This time, though infected, she does not get sick. -These cells are involved in cell-mediated immunity, and they respond to class I MHC molecule-antigen complexes:

Use the following information to answer the following questions. Cave art by early humans recognized the existence of the major signs of inflammation. -Which of the following are symptoms of inflammation that might appear in such art?

An epitope associates with which part of an antibody?

The next questions refer to the following data on blood types. Case 1 Case 2 Case 3 Mother , , , Fetus , , , Figure 43.2 -In Cases 1 and 2 in the table, the mothers would be able, if needed, to supply blood to the newborn even 7-9 months after birth; the same would not be True for Case 3. Why?

An immunoglobulin (Ig)molecule, of whatever class, has regions symbolized as C or V, H or L. A light chain has which of these regions?

An invertebrate, such as an insect, has innate immunity that can be nonspecific about which pathogens are prevented from harming its metabolism. Which of the following is most likely to function this way in the insect's intestine?

Use the graph in Figure 43.1 to answer the following questions. Figure 43.1 -When would you find antibodies being produced?