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- What do neutrophils do that macrophages dont do? A) antigen presentation B) Degranulate C) Phagocytose pathogens D) Both A & B E) Both B & CFor the following questions, specify which immunoglobulin is being described, according to the following key: a) IgA b) IgE c) IgG d) IgM e) more than one 33) Produced early in infection with high avidity 34) Labeled "secretory* 35) Most associated with parasitic infection 36) Generally produced most prominently following clearance of initial infection 37) Pentameric 38) Capable of forming a hybridoma 39) Associated with mast cell activation 40) Found predominantly in mucus secretions39 A 40-year-old man participating in a study of high altitude for 2 weeks shows an increase in hematocrit from his usual 40% to 50% when at sea level Which of the following organs has the greatest involvement in stimulating this increase? A) Brain OB) Kidney C) Liver D) Lung OE) Spleen
- Which stage of HIV infection does the immune system function most closely to normal? A) Attachment B) Asymptomatic C) AIDS D) Symptomatic E) Acute1.The passing of antibodies into newborn babies by their mothers is known as: A) active immunity B) passive immunity C) primary immune response D) antigens The immune system responds to the antigens found on invading microorganisms by: A) producing antibodies B) antibodies preventing the microbe from causing infection C) marking the microbe so that it can be attacked by white blood cells D) all the above1. Which of the following is NOT part of the complement system? a) Antigen presenting cells b) Opsonization c) Capillary permeability. d) Bacterial lysis e) Chemotaxis 2. Before leukocytes can pass through capillary walls, they stick to the capillary wall in the process known as a) chemotaxis b) diapedesis c) extravasation d) opsonization e) margination 3. Which of the following is NOT a function of antibodies? a) Agglutination b) Neutralization c) Opsonization d) They can act as antigen receptors e) All the above are antibody functions ngissol agenon art to inst 4. Which of the following immune cells acts as an antigen presenting cell? tine sidenz orbid mid a) Suppressor T cell b) Cytotoxic Killer T cell c) Natural killer cell d) Macrophage e) Helper B cell 5. Why are pyrogens important in the immune response? a) They act as a warning system and alerts neighboring cells of viral infection b) They reset the internal thermostat to induce fever c) They draw leukocytes to the site of…
- 7. Which of these cells can activate both B & T lymphocytes? a) Helper T cells b) Plasma cells c) Cytotoxic T cells d) Neutrophils e) Mast cells 8. Which of the following happens when a B cell is activated? a) Inflammation b) The activated B cell differentiates into plasma cells and memory cells c) The B cell will suppress the immune response d) It acts as a phagocyte to engulf antigens e) The activated B cell will release haptens 9. How are T lymphocytes activated? a) Release of histamine during the inflammatory process triggers their activation b) By interferon and antibodies Contact with exposed collagen activates helper T cells d) Through direct contact with a foreign antigen e) Activation of any component of the nonspecific immune response will activate T cells 10. The variable region of an antibody c) ngang naging a) Binds to a specific epitope on an antigen. b) Can bind to several different antigens on the same bacterial cell. c) Binds to the first complement protein (C1). d) Is…If the patient's mother had previously vaccinated her son against chickenpox, what form of immunity would he have had against the virus? A) Active natural immunity B) Passive natural immunity C) Active artificial immunity D) Passive artificial immunity41) For the successful development of a vaccine to be used against a pathogen, it is necessary that A) the surface antigens of the pathogen do not change. B) a rearrangement of the B cell receptor antibodies takes place. C) all of the surface antigens on the pathogen be identified. D) the pathogen has only one epitope. E) the MHC molecules are heterozygous. 42) In the human disease known as lupus, there is an immune reaction against a patient's own DNA from broken or dying cells, which categorizes lupus as A) an allergy. B) an immunodeficiency. C) an autoimmune disease. D) an antigenic variation. E) a cancer.
- After his recovery from chickenpox, which lymphocytes will keep this patient from becoming infected again? A) T helper cells B) Natural killer cells C) T memory cells D) B cells18) Which of the following relates to inflammation? A) First line of defense B) Second line of defense C) Third line of defense D) vasoconstriction E) adaptive defense10:35 8) Which test(s) is (are) used to detect hepatitis B? 1. A) Radioimmunoassay 2. B) ELISA 3. C) Antibody test 4. D) All of the choices are correct.