1) Which of the following is characteristic of antibodies?
A) carbohydrate structure
B) composed of heavy and light polypeptide chains
C) three
... [Show More] binding sites per antibody monomer
D) incapable of being transferred from one person to another - ANSWER B) composed of heavy and light polypeptide chains
2) Which of the following is associated with passive immunity?
A) long-term immune protection
B) infusion of weakened viruses
C) passage of IgG antibodies from a pregnant mother to her fetus
D) booster shot - ANSWER C) passage of IgG antibodies from a pregnant mother to her fetus
3) Which of the following is not a type of T cell?
A) cytotoxic
B) antigenic
C) helper
D) regulatory - ANSWER B) antigenic
4) B lymphocytes develop immunocompetence in the ________.
A) thymus
B) spleen
C) bone marrow
D) lymph nodes - ANSWER C) bone marrow
5) In clonal selection of B cells, which substance is responsible for determining which cells will eventually become cloned?
A) antigen
B) lymphocyte
C) antibody
D) macrophage - ANSWER A) antigen
6) The system that recognizes foreign molecules and acts to immobilize, neutralize, or destroy them is the ________.
A) integumentary system
B) renal system
C) immune system
D) lymphatic system - ANSWER C) immune system
7) The process whereby neutrophils and other white blood cells are attracted to an inflammatory site is called ________.
A) diapedesis
B) chemotaxis
C) margination
D) phagocytosis - ANSWER B) chemotaxis
8) Small molecules that bind with self-proteins to produce antigenic substances are called ________.
A) haptens
B) antibodies
C) ions
D) reagins - ANSWER A) haptens
9) The chief antibody-mediated mechanism used against cellular antigens, such as bacteria, is ________.
A) interferon production
B) complement fixation
C) neutralization
D) agglutination - ANSWER B) complement fixation
10) The only T cells that can directly attack and kill other cells are the ________.
A) regulatory cells
B) helper cells
C) cytotoxic cells
D) plasma cells - ANSWER C) cytotoxic cells
11) Select the correct statement about phagocytic cells.
A) Neutrophils may destroy themselves when they phagocytize large quantities of a foreign substance.
B) Macrophages release defensins during killing.
C) The respiratory burst characterizes eosinophil phagocytosis.
D) Kupffer cells are a type of neutrophil. - ANSWER A) Neutrophils may destroy themselves when they phagocytize large quantities of a foreign substance.
12) ________ predominate at the sites of chronic infections.
A) Basophils
B) Eosinophils
C) Macrophages
D) B cells - ANSWER C) Macrophages
13) ________ determine(s) what specific foreign substances our adaptive immune system will be able to recognize and resist.
A) The type of antigen
B) Memory cell production
C) Enzymes present at the time of the invasion
D) Our genes - ANSWER D) Our genes
14) Regulatory T cells ________.
A) release cytokines that increase the activity of cytotoxic T cells and activated B cells
B) decrease their activity as antigenic stimulus decreases
C) may function in preventing autoimmune reactions
D) are the most thoroughly understood T cells - ANSWER C) may function in preventing autoimmune reactions
15) ________ are released by activated T cells and macrophages to mobilize immune cells and attract other leukocytes into the area.
A) Cytokines
B) Perforins
C) Interleukin 1 proteins
D) Interleukin 2 proteins - ANSWER A) Cytokines
16) Which of the following is a part of the second line of defense against microorganisms? [Show Less]