BIO 250 Microbiology QUIZ 4 - {2022} | BIO250 Microbiology QUIZ 4 - A Grade

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Question 1 Correct 4.50 points out of 4.50 Each of the following results in drug resistance, except Select one: a. a drug being pumped out of the cell.b. a drug being used as a nutrient by the cel... l. c. a drug binding site being altered.d. a drug being inactivated.e. a drug being blocked from entering the cell. The correct answer is: a drug being used as a nutrient by the cell. Alcohols Select one: a. denature proteins when in a 50-95% alcohol-water solution.b. disinfect items when soaking method is utilized.c. are skin degerming agents.d. at 50% or higher concentrations dissolve cell membrane lipids. e. All of the choices are correct. Question 2 Correct 4.50 points out of 4.50 The correct answer is: All of the choices are correct. Iodophors include ______. Select one:a. chloramines b. betadinec. tincture of iodine d. alcoholse. chlorhexidine Question 3 Correct 4.50 points out of 4.50 The correct answer is: betadine What type of cells secrete antibodies? Select one: a. Memory B cells b. Cytotoxic T cells c. Plasma cellsd. Helper T cells e. Antigen-presenting cells Question 4 Correct 4.50 points out of 4.50 The correct answer is: Plasma cells Precipitation tests involve all of the following except Select one:a. they rely on formation of visible clumps for detection. b. they include the VDRL test for syphilis. c. they are often performed in agar gels. d. they can be done in a test tube by carefully adding antiserum over antigen solution. e. a cloudy or opaque zone developing where antigen and antibody react. Question 5 Correct 4.50 points out of 4.50 The correct answer is: they rely on formation of visible clumps for detection. Various bacterial enzymes that dissolve brin clots are ______. Select one: a. coagulases b. mucinases c. keratinases d. kinases e. hyaluronidases Question 6 Correct 4.50 points out of 4.50 The correct answer is: kinases [Show More]

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