False staphylococcus saprophyticus does not grow on

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FalseStaphylococcus saprophyticus does not grow on Mannitol Salt AgarFalseA laboratory professional is working up a wound specimen. He notes Gram positivecocci in clusters and a moderate number of neutrophils. This specimen most likelyindicates:ContaminationNormal floraAn infectionAn infectionBubbling is observed when a few of the isolated colonies are added to hydrogenperoxide. This indicates:a positive slide coagulase reactiona negative slide coagulase reactiona negative catalase reactiona positive catalase reactiona positive catalase reactionThe classification of streptococci based on group-specific cell wall carbohydrates is:Brown's classificationLancefield groupingsNone of these are correctSherman's divisionsLancefield groupingsStreptococcus pneumoniae typically produces β hemolysis.FalseThe Enterococcus are bile esculin positive and salt tolerant
TruePartially lysed red blood cells under and around a colony on sheep blood agar appearasa green discoloration.a blue discoloration.a clear zone.no change in the agar.a green discoloration.Streptococci are Gram positive cocci that:arrange microscopically in pairs or chainsproduce raised, pigmented colonies on sheep blood agarare catalase positiveare obligate anaerobesarrange microscopically in pairs or chainsWhich of the following tests should performed for initial differentiation of Listeriamonocytogenes from group B streptococci?Gram stain, motility at room temperature, catalaseGram stain, CAMP test, H2S/TSIOxidase, CAMP test, glucoseOxidase, bacitracinGram stain, motility at room temperature, catalaseA Corynebacterium species recovered from a throat culture is considered a pathogenwhen it produces:A pseudomembrane of the oropharynxAn exotoxinGray-black colonies on potassium tellurite mediaAll of the aboveAll of the aboveThe organism that exhibits characteristics end-over-end tumbling motility whenincubated in nutrient broth at room temperature for 1 to 2 hours is:
Bacillus cereus.Corynebacterium diphtheriae.Listeria monocytogenes.Bacillus anthracis.Listeria monocytogenes.Patients who are immunocompromised and women who are pregnant should avoideating soft cheeses such as Mexican-style, feta, Brie, Camembert, and blue-veinedcheeses to prevent:foodborne listeriosis.gastric gangrene.staphylococcal food poisoning.Salmonella infection.foodborne listeriosis.On a gram stain, diphtheroids can look very similar to:Viridans strepStaph aureusbacillusStrep pyogenesViridans strepA tissue culture has grown only one type of bacteria. The gram stain shows grampositive rods in a Chinese-letter formation. Catalase is positive and the colonies arenon-hemolytic on sheep blood agar. Which of these bacteria must be ruled out?

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Term
Fall
Professor
MargaretaFarrell
Tags
Bacteria, sputum

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