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46) Polysaccharides on bacterial cells stimulate the production of antibodies by binding to ________.A) B cells that stimulate plasma cell proliferationB) B cells that stimulate plasma and memory cell proliferationC) helper T cells that release interleukin-1 to stimulate plasma cell proliferationD) helper T cells that directly stimulate plasma and memory cell proliferationE) B cells that release interleukin-2 to stimulate plasma cell proliferationAnswer: ADiff: 5 Page Ref: 67947) Antibodies are classified not only by their function, but by the ________.BDiff: 3 Page Ref: 67948) In the process of agglutination, IgD antibodies ________.CDiff: 4 Page Ref: 68010
49) Once IgM antibodies have bound to antigens, they are removed by ________.EDiff: 5 Page Ref: 68050) Which of the antibody classes is able to cross epithelial cells and is therefore present in breast milk?A) IgG onlyB) IgM onlyC) IgA onlyD) both IgG and IgME) both IgM and IgAAnswer: CDiff: 5 Page Ref: 68051) Which of the antibody classes is able to destroy an antigen by activating the nonspecific killing action of the natural killer cells?ADiff: 5 Page Ref: 68052) What secretes cytokines that enhance the activity of B cells, cytotoxic T cells, suppressor T cells, and helper T cells?CDiff: 4 Page Ref: 68253) Which type of T cell has antigen receptors?EDiff: 4 Page Ref: 68111
54) Receptors on every T cell detect foreign antigens on cells of the body by their association with the ________ on the surface of the infected cells of the body.A) membrane attack complexB) CD4C) CD8D) major histocompatibility (MHC) moleculeE) antibodiesAnswer: DDiff: 4 Page Ref: 681