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Q: An allergic reaction is an example of:
A: An allergic reaction is an example of:
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The primary B-cell receptor is
a. IgD b. IgA c. IgE d. IgG
Step by step
Solved in 3 steps
- Antibodies are ________. a. antigen receptors c. proteins b. made only by B cells d. all of the aboveA dendritic cell engulfs a bacterium, then presents bacterial bits on its surface along with an _______. a. MHC marker c. T cell receptor b. antibody d. antigenActivated complement proteins ________. a. puncture cells c. attract macrophages b. promote inflammation d. all of the above
- The humoral immune response depends on which cells? a. TC cells b. B cells c. B and TH cells d. TC and TH cellsNon-protein antigens are ineffective becase they cant A. Trigger IgM production B. Be used as a BCR to activate neutrophils C. Be presented on MCH II to activate T helper cells D. Cause B cell apoptosisAn allergic reaction is an example of: a) the immune system not working at all. b) a deficiency of B cell responses. c) the immune system doing its job too well. d) an overabundance of T cell responses.
- Stromal cells produce _______, which is a secreted B-cell development growth factor influencing progression of B cells from the late pro-B-cell to the pre-B-cell stage. a. stem-cell factor b. Kit c. IL-7 d. VLA-4 e. VCAM-1.a. Explain why babies with agammaglobulinemia do not developopportunistic infections until about 6 months after birth.b. Explain why people with B-cell deficiencies can benefit fromartificial passive immunotherapy. Explain whether vaccinationwould work for them.c. Explain why T-cell deficiencies usually cause more severe effectsthan B-cell deficiencies.The complement system of defense is composed of proteins that are always present in the blood. Which statement describes the importance of this system in early pathogen defense? A.) It does not have to be activated by antibodies. B.) It rapidly lower the blood pH. C.) It recognizes specific common pathogens. D.) It causes immediate pathogen lysis.
- The best definition of an antigen is:(a) A foreign molecule in the body(b) A chemical that elicits antibody production and binds tothat antibody(c) A molecule that binds to antibody(d) A pathogen(e) An enzyme that activates B cellsThe immune response indicative of a curent primary mononucleosis caused by EBV is: a. only a secretory IgA response b. only an IgG response c. only an IgM response d. an IgG response to VCA or capisd antgen and EBV nuclear antigen e. an initial IgM response shortly followed by IgG thank you!!!!Type I, or immediate, hypersensitivity triggers plasma cells to secrete:- a. IgD b. IgM c. IgE d. IgA
