microbiology

Question 11.4 PointsThe B-lymphocyteIs thymus derived.Matures in the thymus gland in all birds and mammals.When activated will divide and form specialized plasma cells which produce antibodies.Engages in a spectrum of immune functions characterized as cell-mediated immunity.Question 21.4 PointsThe absence of hemolysis on a blood agar plate is referred to as _______ hemolysisAlphaBetaGammaDeltaQuestion 31.4 PointsMicrobial resistance to drugs is acquired throughConjugationTransformationTransductionAll of these answers contributeQuestion 41.4 PointsThe field of study in which medicine and microbiology intersect is known as medical microbiologyTrueFalseQuestion 51.4 PointsAll of the following are methods that can be used to isolate bacteria from a mixed culture EXCEPTStreak platingLoop dilution pour platingGram stainingSerial dilution followed by spread platingQuestion 61.4 PointsThe progeny cells of a B cell clone are calledAntibodies.Activated macrophages.Sensitized T cells.Bursa cells.Plasma cells.Question 71.4 PointsMannitol salt agar is used to select strains of staphylococci from streptococci and enterococci within the sample.TrueFalseQuestion 81.4 PointsBefore attempting to identify an unknown bacterial species using traditional methods, the organism must be isolated in a pure culture.TrueFalseQuestion 91.4 PointsNatural passive immunity involves the passing of antibodies from mother to infant and acts immediately but is short-lived.TrueFalseQuestion 101.4 PointsKey historical discoveries leading to the field of medical microbiology include all but which of the following:Koch’s postulatesLister’s development of aseptic techniqueMendel’s principles of geneticsLeeuwenhoek’s discovery of animalcules under the microscopeQuestion 111.4 PointsAny clear zone of inhibition around an antibiotic disc being used for identification is a clear indication that the organism is sensitive to the antibiotic.TrueFalseQuestion 121.4 PointsA vaccine that contains a protein conjugated to a capsule polysaccharide is calledAcellularAttenuatedConjugateSubunitQuestion 131.4 PointsFive classes of antibodies includeIgG, IgA, IgM, IgD, and IgEIgA, IgB, IgD, IgE, and IgMIgB, IgC, IgD, IgE, and IgMIgG, IgB, IgM, IgD, and IgEQuestion 141.4 PointsThe _________ test involves using rabbit plasma as a reagent and its results are determined by observation of thickening of the medium.CatalaseOxidaseCoagulasePeroxidaseQuestion 151.4 PointsThe majority of white blood cells in circulation includeNeutrophils and lymphocytes.Eosinophils and basophils.Macrophages.Erythrocytes.Question 161.4 PointsCharacteristics of an ideal antimicrobial drug include all EXCEPTToxic to the specific microbe but nontoxic to the hostReadily delivered to the site of infectionDoes not lead to the development of antimicrobial resistanceEasy to administer but able to reach the infectious agent anywhere in the bodyAll of the answers are correctQuestion 171.4 PointsInfections that are more common during pregnancy include all the following EXCEPTMalariaUrinary tract infectionsCandidiasisPoliomyelitisSyphilisQuestion 181.4 PointsHow do you determine the species of an unknown bacterium?You should make a careful investigation of the morphology of the bacterial cells using a microscope to make a firm identification.You need to quantify the number of bacteria in the same to determine the species.Identification can only be made based on the patient’s signs and symptoms.You use standard tests and pre-existing knowledge to classify the bacterium.Question 191.4 PointsType I hypersensitivities includeHay feverHemolytic disease of newbornsCeliac diseaseGraft rejectionQuestion 201.4 PointsA vaccine that contains living, non-virulent strains of a microbe is calledAcellularAttenuatedInactivatedToxoidQuestion 211.4 PointsThe composition of a person’s microbiome may have an important influence on the occurrence of autoimmune disorders.TrueFalseQuestion 221.4 PointsWhich test uses a medium that is both selective and differential for gram-negative lactose fermenters and non-lactose fermenters?MacConkey agarMannitol salt agarCoagulase testBile esculin hydrolysisQuestion 231.4 PointsThe least numerous of all white blood cells that release histamine during inflammation and allergic reactions areMonocytes.Basophils.Lymphocytes.Eosinophils.Neutrophils.Question 241.4 PointsMedical Microbiology includes all but which of the followingPathologyImmunologyEpidemiologyPhycology/algologyBacteriologyQuestion 251.4 PointsThe specificity of an antibody is due toThe constant portions of the H and L chains.The L chains.The variable portions of the H and L chains.Its valence.The H chains.Do you have additional content?You can add text, images, and files that support your answers.Add ContentDetails & InformationAssessment due date6/13/21, 11:59 PM (CDT)Time limit50 minutes Automatic submissionAttempts1 attempt leftGradingMaximum points35 pointsDescriptionActivity Time: 50 minutes; Additional Time for Study, Research, and Reflection: 1 hour and 40 minutes50 minutes remainingSave and Close Submit50 minutes remaining

 





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