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- What host defense is illustrated in this figure? Multiple Choice: select one: Lacrimation; first line defenseComplement; second line defenseNatural killer cells; first line defenseInterferon; first line defenseInterferon; second line defenseWhich line(s) of defense is(are) called innate? O First O Third SecondPart I. Match the pictures that depicts the modes of prevention of parasites and predation. в F Pany Satuply H _1. Immunological defense 2. Cryptic Coloration (camouflage) 3. Protective resemblance _4. Aggressive resemblance 5. Chemical defense _6. Straight Forward Defense/Behavioral _7. Counter Shading _8. Warning Coloration (Aposematic) _9. Morphological Defense _10. Associational defense
- All of the following are mechanisms used by pathogens to penetrate host defenses EXCEPT: 1. Capsules 2. Enzymes 3. Antigenic variation 4. None of the other four answers (all are examples of how pathogens penetrate host defenses) 5. Penetration of cytoskeletonAll of the following are methods protozoans use to avoid the host immune response EXCEPT O antigenic masking O toxin production O antigenic variation o immunosuppression.Explain the structure of protective system in detail with necessary diagram ?
- Diagram the host cell receptors that distinguish self from nonselfPart I. Match the pictures that depicts the modes of prevention of parasites and predation. 1 4709 A C E Piny Butefly Henmb Batefly J 1. Immunological defense 2. Cryptic Coloration (camouflage) 3. Protective resemblance 6. Straight Forward Defense/Behavioral 7. Counter Shading 8. Warning Coloration (Aposematic) 9. Morphological Defense 10. Associational defense 4. Aggressive resemblance 5. Chemical defense Part 2. Identify each immune response as either humoral (H) or cellular (C. 11. release of histamine causes itching & sneezing 12. cytotoxic T lymphocytes kill infected cells 13. plasma B cells are cloned alibodies mark pathogen's antigensWhich 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.
- 3. Figure 3 shows the overview of adaptive immune defenses. Rajah 3 menunjukkan gambaran keseluruhan pertahanan imun penyesuaian. Adaptive Immunity Keimunan penyesuaian Antibody Mediated Immunity Keimuniti antibodi-perantara Cell-mediated immunity Keimuniti sel-perantara Cell F Cell G Helper T cell Sel T pembantu Sel F Sel G H Production of plasma cells and antibodies Phagocytosis or Apoptosis Fagositosis atau Apoptosis Penghasilan sel plasma dan antibodi Figure 3 Rajah 3 i. Why is cell G regarded as the "serial killer" of the immune system? ii. By relating to process H, why does the adaptive defense in the body takes longer than innate defense to become functional?Consider that the Herd Immunity Threshold is dependent on the reproduction number for an infectious disease. The combination of herd immunity and quarantines were highly effective for eradicating smallpox. What is different about the symptoms of polio infection that makes quarantining infected individuals much more difficult?Which of the following is NOT a site colonized by normal microbiota in humans? Large intestine (colon) Skin Mouth Brain and spinal cord None of the other four answers (All are sites where normal microbiota are found)
