21. The Immune System

Classes of Antibodies

Open Question
How do antibodies help defend the body?
Multiple Choice
Which are correctly matched?
Open Question
Compare and contrast the effects of complement with those of interferon.
Open Question
An anesthesia technician is advised that she should be vaccinated against hepatitis B, which is caused by a virus. She is given one injection and is told to come back for a second injection in a month and a third injection after 6 months. Why is this series of injections necessary?
Open Question
Which of the following is not a role of TH cells?

a. Stimulation of macrophages
b. Activation of naïve TC cells
c. Stimulation of naïve B cells
d. Stimulation of clonal selection
Multiple Choice
Which of the following are MISMATCHED?
Open Question
Explain how active immunity and passive immunity differ.
Open Question
The major histocompatibility complex (MHC) (a) is responsible for forming lymphocytes, (b) produces antibodies in lymph glands, (c) is a group of genes that codes for human leukocyte antigens, (d) is a membrane protein that can recognize foreign antigens, (e) is the antigen found on bacteria that stimulates an immune response.
Open Question
Mark the following statements as true or false. If a statement is false, correct is to make a true statement.

c. Subunit vaccines consist of pathogens that are alive but unable to cause disease.
Multiple Choice
Which of the following antibodies is involved in causing basophils to release histamine when the antibody encounters an allergen?
Multiple Choice
Each class of antibody is specifically defined by its
Open Question
Which antibody class is abundant in body secretions?a. IgA,b. IgD,c. IgE,d. IgG,e. IgM.
Open Question
The specificity of an antibody is determined by the (a) fixed segment, (b) antigenic determinants, (c) variable region, (d) size of the antibody, (e) antibody class.
Activity
Mechanisms of antibody action
Multiple Choice
Cytotoxic T cells kill target cells __________.