b. Cell that coordinates the immune response of many kinds of cells c. Proteins that circulate in the blood and recruit and activate one another d. An antigen-presenting cell, primary job is phagocytosis e. Targets extracellular bacteria f. Cell that kills human body cells infected by a particular pathogen g. Resides in tissues and stimulates inflammation h. Cell that can kill any diseased cell (same one can target bacteria or virus infected cell) i. Y-shaped protein that matches particular antigens j. Targets helminths or protozoa k. Regulates the response of other T-cells
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- Which of the following is not a part of innate immunity? a. phagocytic cells e. inflammation b. fever f. complement activation c. histamines g. presenting antigen d. cytokines h. all take partWhich of the following is TRUE regarding Gram negative bacteria? a- Their cell wall is composed of a large proportion of sugars b- Their cell wall does not absorb the Gram stain and turns pink c- Their cell wall is composed of a small proportion of peptidoglycan d- Two of the above statements are true Which T-lymphocytes activate the B-cell response? 1- suppressor T-cells. 2- cytotoxic T-cells. 3- helper T-cells. 4- memory T-cells. Substances that are injected containing an antigen to stimulate the immune system to respond are called a- antibodies b- medications. c- vaccines d- antibioticsMatch each lettered term with the most closely related description. a. cytotoxic T cells Stimulated by the release of cytokines from macrophages, helper T cells, and interferons, b. viruses The race is on: с. В сеlls 15 14 d. antibodies try to replicate before the immune system can mount a response. Two have already taken over cells in the body. quickly recognize the viruses as a foreign threat. They begin destroying viruses by engulfing them. e. helper T cells join the attack on virus- infected cells. They also fight cancer cells. f. macrophages g. natural killer (NK) cells h. regulatory T cells eieg ucl bris ah lo oolom i. memory T cells and B cells neo alled 18 alloo omeslo ofni ola 19 17 are Y-shaped proteins designed specifically to recognize a particular viral mature into plasma cells, which in turn produce Y-shaped proteins. ebie hel ert beer honelni vood avtne er (the battle managers of the immune system) emit sig- nals to other lymphocytes to join the attack. oeonetelagn or…
- Which two events are required to activate a cytotoxic T cell? There is more than one answer. O Class II MHC molecules present extracellular antigen for binding on a complementary cytotoxic T cell receptor. O IL-4 is released by a TH1 cell to be bound by a cytotoxic T cell. O Class I MHC molecules presents intracellular antigen for binding on a complementary cytotoxic T cell receptor O IL-2 is released by a TH1 cell to be bound by a cytotoxic T cell.Which of the following statements is NOT correct? Group of answer choices -Natural killer cells are cytolytic lymphocytes that mediate ADCC -Neutrophils carry out phagocytosis of C3b-tagged particles -Macrophages carry out phagocytosis of C3b-tagged particles -Mast cells produce granules containing the cytotoxin perforin -B lymphocytes express a receptor for complement proteinsMake an illustration that connects the events in inflammation mediated by chemical substances. Use the following words to come up with the output connected by arrows. 1. Modified proteins 16. C142356789 2. Kininogen 3. Prostaglandins 4. Clotting system 5. Antigen 17. Kallikrein 18. Platelets 19. Serotonin 20. Kinins 21. C1423 22. Anaphylotoxins 6. Lysosomal enzymes 7. Antibody 8. C1 9. Kallikreinogen 23. Chemotactic factor 24. Serum factors 10. C142 25. C14235 11. Antigen/Antibody 12. Cells migration 26. C1423567 27. Injurious stimuli 13. Histamine 28. Acute inflammation 14. Plasmin system 29. Increased vascular permeability 15. C3 30. Chronic inflammation
- b) Figure 14 shows a part of acquired immune response. Pathogen P Antigen fragments MHC Antigen гесeptor. CD4 Helper T cell Activated helper T cell Figure 14 i) Describe the above process. II) Why do O and P have different pathways for antigen processing although the same antigen is identified? iii) What are the effects on P when activated helper T cell releases Q7List 3 things that helper T cells do:Classify the following images into the type of defense it represents. Interleukin Other cytokines Macrophage, B cell, or other antigen-presenting cell Clonal selection of B cells Helper T (T4) cell Macrophage- activating factor Other cytokines Macrophage activity Leukocyte chemotaxis Inflammation Interleukin Other cytokines Cellular Immunity Humoral Immunity Nonspecific Defense Clonal selection of cytotoxic T cells Next> 51 of 83 Prev
- Match the type or cause of clonal expansion with the correct situation. Use each choice just one time and make the best match. Clonal expansion of B cells because the cells are infected with EBV Clonal expansion of B-cells because these B-cells have B Cell Receptors that recognize a non-self antigen Clonal expansion of T-cells that have a T Cell Receptor that recognizes EBV antigens A. normal adaptive response by the B cells B. part of pathogenesis of mono C. This allows the adaptive immune system to shut down active EBV infectionWhich of the following is true about innate immune system? Check all that apply. Rig-I-like receptors have the advantage of recognizing viruses by interacting with their spike proteins TLR signaling includes NF-kB pathways to induce synthesis of proinflammatory cytokines TLR binds to dsDNA or ssRNA to induce interferon gene expression PRR induced secretion of proinflammatory cytokines and chemokines have local and systemic effects PRR induces innate immunity; phagocytosis, inflammation, type I interferon production, and regulate adaptive immunity; DC maturation, costimulatory molecules, type I interferonDetermine if the following description should be categorized as Humoral Immunity (B-cell activity), Cellular Immunity (T-cell activity), or both (B & T-cells perform this activity). 1. Can create antibodies 2. Can destroy pathogens by secreting perforins 3. Is activated by a T-helper cell 4. Undergoes clonal selection 5. Has the ability to stop clonal selection 6. Must have an APC (antigen presenting cell) to be activated 7. Can be activated by pathogen in circulation 8. Migrates around the body in the lymph 9. Can create a tag of MHC proteins to alert body of infection 10. Creates memory cells to recognize the pathogen in the future 11. Stimulated by MHC class 2 APC cells only 12. Can activate the second line of defense by secreting antibodies