41. Immune System
Adaptive Immunity
- Multiple ChoiceHow do antibodies to foreign blood groups come to exist in the body?1033views
- Multiple ChoiceWhat do the antibodies secreted by plasma cells (the effector cells of humoral immunity) do to attack their targets?1291views1rank
- Multiple ChoiceWhat is the role of dendritic cells in the primary immune response?2166views
- Multiple ChoiceWhich of the following cell types carries out humoral immunity?1361views1rank
- Multiple ChoiceWhich of the following functions of plasma-cell-secreted antibodies promotes phagocytosis of foreign bacteria?917views
- Multiple ChoiceThe proliferation of the B lymphocyte to which a specific antigen binds is referred to as __________.1042views1rank
- Multiple ChoiceOnce you have been exposed to an antigen, you develop immunity against the same antigen because __________.781views
- Multiple ChoiceThe antigen-binding sites of an antibody molecule are formed from the molecule's variable regions. Why are these regions described as variable?1928views
- Multiple ChoiceThe body produces antibodies complementary to foreign antigens. The process by which the body comes up with the correct antibodies to a specific invader is most like __________.1257views
- Multiple ChoiceA viral infection in a cell results in __________.995views
- Textbook Question
What is the primary difference between the innate and adaptive immune responses?
a. The innate immune response does not distinguish between pathogens, while the adaptive immune response does.
b. Only the innate immune response is activated by antigens.
c. The adaptive immune response generates immunological memory and is more specific than the innate immune response.
d. The innate immune response does not kill cells; the adaptive immune response does.
1480views1rank - Textbook Question
An epitope associates with which part of an antigen receptor or antibody?
a. The tail
b. The heavy-chain constant regions only
c. Variable regions of a heavy chain and light chain combined
d. The light-chain constant regions only
1120views - Textbook Question
Which statement best describes the difference between responses of effector B cells (plasma cells) and those of cytotoxic T cells?
a. B cells confer active immunity; cytotoxic T cells confer passive immunity.
b. B cells respond the first time a pathogen is present; cytotoxic T cells respond subsequent times.
c. B cells secrete antibodies against a pathogen; cytotoxic T cells kill pathogen-infected host cells.
d. B cells carry out the cell-mediated response; cytotoxic T cells carry out the humoral response.
1938views - Textbook Question
Which of the following statements is true?
a. An antibody has one antigen-binding site
b. A lymphocyte has receptors for a single antigen
c. Every antigen has a single epitope
d. A liver or muscle cell makes two classes of MHC molecule
1617views1rank - Textbook Question
Which of the following best describes the difference in the way B cells and cytotoxic T cells deal with invaders?
a. B cells confer active immunity; T cells confer passive immunity.
b. B cells send out antibodies to attack; certain T cells can do the attacking themselves.
c. T cells handle the primary immune response; B cells handle the secondary response.
d. B cells are responsible for the cell-mediated immune response; T cells are responsible for the humoral immune response.
1541views