Chapter 17 Questions

The specificity of an antibody is due to: the L chains. the constant portions of the H and L chains. its valence. the variable portions of the H and L chains. the H chains.

Which of the following is NOT a characteristic of cellular immunity? It can inhibit the immune response. Cells are processed in the thymus gland. B cells make antibodies. The cells originate in bone marrow. T cells react with antigens.

The antibodies found in mucus, saliva, and tears are primarily: IgE. IgD. IgA. IgG. IgM.

In addition to IgG, the antibodies that can fix complement are: None of the answers are correct. IgE. IgD. IgM. IgA.

Which of the following destroys virus-infected cells? T(reg) dendritic cells T(H) B cells CTL

Which of the following statements about natural killer cells is FALSE? They destroy tumor cells. They destroy virus-infected cells. They destroy cells lacking MHC I. They are stimulated by antigen from infectious agents. None of the answers are correct; all of these statements are true

A Treg cell deficiency could result in: increased number of bacterial infections. autoimmunity. increased number of viral infections. increased severity of bacterial infections. transplant rejection.

ADCC is a process that is most effective in destroying: eukaryotic parasites bacterial pathogens. bacterial toxins. prions. extracellular viruses.

MOST antigens are composed of: nucleic acids or lipids proteins or large polysaccharides. proteins or lipids. lipids or large polysaccharides.

IgG antibodies that inactivate microbes by blocking their attachment to host cells is the process of: apoptosis. agglutination. neutralization. opsonization.

The FIRST antibody B cells make during primary response to an infection is: IgA. IgE. IgM. IgG.

A person who has measles will develop ________ immunity. naturally acquired passive artificially acquired passive artificially acquired active naturally acquired active

What type of immunity is conveyed when exposed individuals are given antibodies by injection? artificially acquired passive immunity naturally acquired passive immunity artificially acquired active immunity naturally acquired active immunity

A person has been sick less than one week and comes to the clinic with fever and yellow skin. The doctor requests a serology test for hepatitis A. Which type of antibodies should be detected during this acute infection? IgG IgD IgE IgA IgM

A 60-year-old patient presents at the clinic with a painful rash on the left side of his torso. The doctor orders a serology test against herpes zoster virus. What type of antibodies should be measured? IgD IgE IgA IgM IgG

Which type of antibodies cross the placenta? IgE IgG IgA IgD IgM

Patients infected with HIV and with active AIDS have low levels of CD4+ cells, which are TH cells. These patients are immunodeficient because ______________ to fight off infections they do not have helper cells to promote B cells and cytotoxic T cells to mature they do not have enough cells to make antibodies they are missing natural killer cells they cannot make IgM antibodies

Macrophages can recognize antibodies bound to the surface of bacteria by recognizing _______ on immunoglobulins. This process induces phagocytosis and is called ____________ Fc regions, antibody-dependent cellular cytotoxicity (ADCC) Fc regions, opsonization Fc regions, agglutination Fab regions, agglutination Fab regions, opsonization

In Figure 17.1, which letter on the graph indicates the patient's secondary response to a repeated exposure with the identical antigen? c a e b

Opsonization

Agglutination

Neutralization

ADCC

Membrane attack lysis