NR507 Week 1 Quiz Latest 2019

QuestionQuestion 12 / 2 ptsAfter sexual transmission of HIV, a person can be infected yet seronegative for _____ months.24 to 366 to 1418 to 201 to 2Question 22 / 2 ptsOnce they have penetrated the first line of defense, which microorganisms do neutrophils actively attack, engulf, and destroy by phagocytosis?MycoplasmaFungiVirusesBacteriaQuestion 32 / 2 ptsCells in _____ may act as a reservoir in which HIV can be relatively protected from antiviral drugs.bone marrowthe lungsthe thymus glandthe central nervous systemHIV may persist in regions where the antiviral drugs are not as effective, such as theCNS.Question 42 / 2 ptsWhat of the following remains a significant cause of morbidity and mortality worldwide?Cardiovascular diseaseStarvationTraumatic injuryInfectious diseaseQuestion 52 / 2 ptsWhich statement about vaccines is true?Most viral vaccines are made by using dead organisms.Vaccines require booster injections to maintain lifelong protection.Vaccines provide effective protection for all people against viruses, bacteria, and fungal infections.Most bacterial vaccines contain attenuated organisms.Question 62 / 2 ptsWhich statement is true about fungal infections?They are prevented by vaccines.They result in release of endotoxins.They occur only on skin, hair, and nails.They are controlled by phagocytes and T lymphocytes.Question 72 / 2 ptsWhat is the mechanism in type III hypersensitivity reactions?Antibodies bind to the antigen on the cell surface.Antibodies bind to soluble antigens that were released into body fluids and the immune complexes are deposited in the tissues.Cytotoxic T lymphocytes or lymphokine-producing Th1 cells attack and destroy cellular targets directly.Antibodies coat mast cells by binding to receptors that signal its degranulation followed by discharge of preformed mediators.Question 82 / 2 ptsA person with type O blood is likely to have high titers of anti-___ antibodies.OBAA and BQuestion 92 / 2 ptsWhat disease involves the deposition of circulating immune complexes containing an antibody against host DNA, resulting in tissue damage?Pernicious anemiaMyasthenia gravisHemolytic anemiaSystemic lupus erythematosus (SLE)Question 102 / 2 ptsIn which primary immune deficiency is there a partial to complete absence of T-cell immunity?DiGeorge syndromeBruton diseaseReticular dysgenesisAdenosine deaminase (ADA) deficiencyQuestion 112 / 2 ptsHypersensitivity is best defined as a(n)disturbance in the immunologic tolerance of self-antigens.altered immunologic response to an antigen that results in disease.undetectable immune response in the presence of antigens.immunologic reaction of one person to the tissue of another person.Question 122 / 2 ptsThe class of antibody involved in type I hypersensitivity reactions isIgE.IgM.IgA.IgG.Question 132 / 2 ptsDeficiencies in which element can produce depression of both B- and T-cell function?MagnesiumIronIodineZincQuestion 142 / 2 ptsWhat effect does estrogen have on lymphocytes?Enhancement of B cells and T cellsDepression of T cells and enhancement of B cellsDepression of B cells and enhancement of T cellsDepression of B cells and T cellsQuestion 152 / 2 ptsStress-age syndrome results in decreasedACTH.catecholamines.cortisol.immune system.Question 162 / 2 ptsWhich cytokines initiate the production of corticotropin-releasing hormone (CRH)?IL-1 and IL-6TNF-ß and IL-4IL-2 and TNF-?IFN and IL-12Question 172 / 2 ptsDuring a stress response, increased anxiety, vigilance, and arousal is prompted byACTH.norepinephrine.cortisol.epinephrine.Question 182 / 2 ptsCells from a muscle tumor show a reduced ability to form new muscle and appear highly disorganized. This is an example ofanaplasia.dysplasia.myoplasia.hyperplasia.Question 192 / 2 ptsWhat is the role of vascular endothelial growth factor (VEGF), basic fibroblast growth factor (bFGF), and transforming growth factor-alpha (TGF-?) in cell metastasis?To stimulate growth of nearby tumor cellsTo develop new blood vessels to feed cancer cellsTo prevent cancer cells from escaping apoptosisTo act as a chemical gradient to guide cells to blood vesselsQuestion 202 / 2 ptsWhich of the viruses below are oncogenic DNA viruses?Adenoviruses, herpesviruses, and retrovirusesHerpesviruses, retroviruses, and papovavirusesRetroviruses, papovaviruses, and adenovirusesPapovaviruses, adenoviruses, and herpesvirusesQuestion 212 / 2 ptsWhich of the following represents the correct nomenclature for benign and malignant tumors of adipose tissue, respectively?Liposarcoma, lipomaAdipoma, adisarcomaAdisarcoma, adipomaLipoma, liposarcomaQuestion 220 / 2 ptsIn chronic myeloid leukemia (CML), a piece of chromosome 9 fuses to a piece of chromosome 22. This is an example of which mutation of normal genes to oncogenes?Chromosome fusionChromosome translocationGene amplificationPoint mutationQuestion 230 / 2 ptsInherited mutations that predispose to cancer are almost invariably what kind of gene?Growth-promoting genesOncogenesTumor-suppressor genesProto-oncogenesQuestion 242 / 2 ptsTobacco smoking is associated with cancers of all of the following 252 / 2 ptsWhat percentage of children with cancer can be cured?40%50%70%60% Do you need a similar assignment done for you from scratch? We have qualified writers to help you. We assure you an A+ quality paper that is free from plagiarism. Order now for an Amazing Discount! Use Discount Code “Newclient” for a 15% Discount!NB: We do not resell papers. Upon ordering, we do an original paper exclusively for you.
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