What scenario best describes an autoimmune reaction? Group of answer choices The destruction of donated red blood cells by the recipient’s immune system The production of antibodies against Streptococcus pyogenes antigen resulting in cross-reaction against an antigen found on heart valves The activation of Mast cells by pollen The production of antibodies against Streptococcus pyogenes resulting in the deposit of antigen-antibodies in the kidney leading to glomerulonephritis

What scenario best describes an autoimmune reaction? Group of answer choices The destruction of donated red blood cells by the recipient’s immune system The production of antibodies against Streptococcus pyogenes antigen resulting in cross-reaction against an antigen found on heart valves The activation of Mast cells by pollen The production of antibodies against Streptococcus pyogenes resulting in the deposit of antigen-antibodies in the kidney leading to glomerulonephritis

BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)

10th Edition

ISBN:9781305967359

Author:STARR

Publisher:STARR

Chapter34: Immunity

Section: Chapter Questions

Problem 13SA

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Which of the following best describes the function of IgA antibodies? O Allergy response O Defense against pathogens at mucosal surfaces by neutralizing them and preventing their attachment to host cells Activation of complement system to destroy bacteria and viruses Killing infected cells by recognizing and attacking their surface antigens Which of the following statements about cytotoxic T cells and MHC is true? O Cytotoxic T cells recognize antigens presented by MHC class I molecules on the surface of all cells in the body. O MHC class I molecules are only found on antigen-presenting cells, such as dendritic cells and macrophages and not on cytotoxic T cells O MHC class Il molecules are only found on infected cells, which present antigens to cytotoxic T cells. O Cytotoxic T cells recognize antigens presented by MHC class II molecules on the surface of all cells in the body.
Some individuals with immunodeficiency have mutations in the digesting enzymes of their macrophages. What impact might this have on their immune systems? Question 8 options: The adaptive immune response may no longer be activated. Macrophage will no longer recognize the PAMPs with their TLRs. Macrophages will not release cytokines upon tissue damage. MHC receptors will present antigens on the surface of the macrophages.
The indirect immunofluorescence ("fluorescent Ab") test shown below is performed to test for: + AA T. pallidum from Specific antibodies laboratory stock in serum of patient Antibodies bind to T. pallidum + ㅅ Fluorescent dye-labeled anti-human immune serum globulin (This will react with any immunoglobulin) Da Fluorescent spirochetes (see Figure 3.6b) None of the other four answers are correct The presence of T. pallidum bacteria in the patient's blood Whether the patient has made antibodies against other human antibodies Immunologic evidence of current or past infection with T. pallidum (i.e., Ab against T. pallidum) Growth of T. pallidum in culture from a syphilis patient
Clear my choice Two antibodies, one is IgM and the other is IgG, both can bind to the same epitope. Which of the following is true about them? O a. They have almost same variable regioi and almost same constant region of the heavy chain. O b. They have almost same variable region but different constant region of the heavy chain. O c. They have different variable region and different constant region of the heavy chain. O d. They have different variable region but same constant region of the heavy chain. SLE is a. Cell mediated autoimmune disease.
The labels describe either a primary or secondary immune response. Drop each label into the appropriate box. Follows second and subsequent encounters with antigen Plasma antibody concentration. First exposure O Primary response IgM made first, then IgG Measurable antibody concentration in 5-10 days 10 20 Secondary response Antibodies produced for several weeks Measurable antibody concentration in 1-2 days 30 Follows first encounter with antigen Memory cells involved Subsequent exposure(s) 40 0 Days after exposure to antigen 10 Only IgG produced 20 30 40
TABLE 6 | Correlation between immune markers and age. Marker NCI PAN LCI LP NK activity (lysis %) R Spearman -0.406 -0.305 -0.239 -0.204 -0.016 Р 0.004 0.035 0.101 0.165 0.913 NCI, Neutrophil Chemotaxis Index; PAN, phagocytic activity of neutrophils; LCI, Lymphocyte Chemotaxis Index; LP, lymphocyte proliferation; NK, natural killer. p is the associated value to the corresponding statistical test.
Examine Type IV hypersensitivities by completing each sentence. 54 Туре IV МНС I tuberculin Compared to Type III hypersensitivities, reactions primarily involve -cell activity. T allografts Type IV dysfunction is known as secondary antigen exposure. hypersensitivity for symptoms arise 1 to several days following contact dermatitis delayed One example, infectious allergy, occurs during the reaction in persons sensitized by tuberculosis Lysosome infection. xenografts GVHD which occurs after exposure to antigens in The most common delayed allergic reaction, however, is plant resins, drugs, or personal articles, and involves the production of inflammatory cytokines that cause blistering. Autografts В -mediated reactions, while Finally, host rejection of grafted tissue can occur due to occurs when passenger cells in the grafted tissue attack host cells. MHC II Psoriasis
Write an essay including the following points;- Discuss three differences between antigen and antibodies Explain the structure of the antibody molecule. Discuss the differences between humoral and cell mediated immunity in terms of chemicals and cells involved in each process as they tackle pathogens.
eds Antibodies (Immunoglobulins) Objective 14 Antibodies (immunoglobulins) are glycoproteins secreted by plasma cells. They are located in interstitial fluid, plasma (gamma globulin fraction) and in body secretions. onse A. Antibody Structure Heavy chain Antigen-binding site Light chain Insmakamos Hinge region Complement- binding site Stem region Macrophage binding site OHO (a) Antibody molecule OHO X = Disulfide bond Carbohydrate four polypeptide chains (two heavy, two light) chains are held together by covalent disulfide bonds (S=S) each heavy chain and each light chain has two functional areas: consists of highly variable amino acid sequences which forms the basis of antibody specificity; antigen binds here ????? to more conserved amino acid sequences; there are five basic sequences of amino acids, which define the 5 antibody classes (IgG, IgA, IgM, IgE and IgD); ????? each class has its own characteristic set of effector functions (see next page) Your notes: 4 40 4. 39
Hello, while doing my microbiology homework I wasn't able to understand how to answer these questions. Which kind of helper T cell response immune response (Th1 or Th2) has been shown to be more important in fighting HIV infection? Suggest one reason why that might be the case 2. Describe the typical drug regimen for treating AIDS. Name the class of drugs used and what are the targets of those drugs.
Discuss the differences between humoral and cell mediated immunity in terms of chemicals and cells involved in each process as they tackle pathogens. (please do this on text as i cant read writing the best) and also in paragraphs and not a table if possible thank you!)
Which of the following statements pertain to this cell. This cell is a precursor to a cell which: 1. is an antigen-presenting cell 2. demonstrates MHC I molecules 3. demonstrates MHC II molecules 4. demonstrates CD4 molecules 5. is capable of synthesizing and releasing perforin and granzymes Choose from the following: (A) 1, 2, and 3 (B) 2 and 3 only (C) 3 and 4 only (D) 1 and 3 (E) 1, 4, and 5