Clinical Laboratory Immunology, 1st Edition Test Bank

Get ahead in your studies with Clinical Laboratory Immunology, 1st Edition Test Bank, featuring exam-focused questions and solutions.

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ExamName___________________________________MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.1)Which of the following defines commensalism?1)A)Biologic relationship between two organisms in which one benefits and the other is harmed.B)Biologic relationship between two organisms in which both are harmed.C)Biologic relationship between two organisms in which both benefit.D)Biologic relationship between two organisms in which one benefits and the other remainsunharmed.Answer:D2)Microbes that colonize a particular person for a long period of time are called2)A)nonpathogenic microbial flora.B)usual microbial flora.C)transient microbial flora.D)resident microbial flora.Answer:D3)Each body site below is pairedcorrectlywith an expected component of the normal microbial floraexcept3)A)colon/enterobacteriaceae.B)vagina/lactobacilli.C)upper respiratory tract/viridians streptococci and diphtheroids.D)skin/Staph epidermisandPropionibacterium.E)All of the above are paired correctly.Answer:E4)Normal microbial skin flora is primarily concentrated on the4)A)dry areas of skin with heavy hair.B)moist areas of skin near sweat glands.C)dry areas of skin with light hair.D)fingernails and toenails.Answer:B5)What is the collective purpose of nasal hair, mucus secretions in the naspopharyngeal tract,phagocytic cells in the throat, bronchial lysozyme, sneezing, and coughing?5)A)To keep organisms from entering the lower respiratory tract and causing infection.B)To keep normal flora in the oropharynx from entering the eustachian tube causing infection.C)To keep normal flora in the oropharynx from causing infection.D)To maintain a sterile environment in the oropharynx.Answer:A6)Quantitatively, the most important defense against food-borne pathogens in the gastrointestinaltract is6)A)peristaltic movement.B)ciliated cells.C)mucus cells.D)resident phagocytic cells.E)low pH and high enzymatic content of the stomach.Answer:E1

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