Urine Reagent Strip Test

11 Questions | Total Attempts: 142

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Urine Quizzes & Trivia

Questions and Answers
  • 1. 
    Ionic solutes present in the urine cause protons to be released from a polyelectrolyte. As the protons are released the pHdecreases and produces a color change of the bromthymol blue indicator from blue -green to yellow green. 
    • A. 

      PH

    • B. 

      Blood

    • C. 

      Leukocyte esterase

    • D. 

      Nitrite

    • E. 

      Specific gravity

  • 2. 
    Double indicator system. Indicators methyl red and bromthymol blue are used to give distinct color changes from orange to green to blue
    • A. 

      Specific gravity

    • B. 

      PH

    • C. 

      Protein

    • D. 

      Glucose

    • E. 

      Ketones

  • 3. 
    Pseudoperoxidase activity of heme moiety. The chromogen reacts with peroxide in the presence of hemoglobin or myoglobin to become oxidized and produce a color change from yellow to green.
    • A. 

      Specific gravity

    • B. 

      PH

    • C. 

      Nitrite

    • D. 

      Blood

    • E. 

      Ketones

  • 4. 
    Action of ______ to cleave an ester and form an aromatic compound is followed by an azocoupling reaction of the aromatic amine formed with a diazonium salt on the reagent pad. The azo dye produce causes a color change from beige to violet.
    • A. 

      Specific gravity

    • B. 

      Protein

    • C. 

      Nitrite

    • D. 

      Leukocyte esterase

    • E. 

      Ketones

  • 5. 
    Diazotization reaction of ________ with an aromatic amine to produce a diazonium salt is followed by an azocoupling reaction of this diazonium salt with an aromatic compound on the reagent pad. The azo dye produces causes a color change from white to pink
    • A. 

      Blood

    • B. 

      Specific Gravity

    • C. 

      PH

    • D. 

      Nitrite

    • E. 

      Protein

  • 6. 
    Sulfanilamide or p-arsanilic acid  is the amine used for what test?
    • A. 

      PH

    • B. 

      Nitrite

    • C. 

      Protein

    • D. 

      Specific gravity

    • E. 

      Blood

  • 7. 
    Error of indicators. When the pH is held constant by a buffer (pH 3.0) indicator dyes release H+ ions because of the ______ present. Color changes from yellow to blue green.
    • A. 

      Blood

    • B. 

      Nitrite

    • C. 

      Protein

    • D. 

      Leukocyte esterase

    • E. 

      Glucose

  • 8. 
    Double-sequential enzyme reaction. Glucose oxidase on reagent pad catalyzes the oxidation of glucose to form hydrogen peroxide. The hydrogen peroxide formed in the first reaction oxidizes  chromogen on the reagent pad. The second reaction is catalyzed by a peroxidase provided on the pad. The color change differs with the chromogen used.
    • A. 

      Ketones

    • B. 

      Bilirubin

    • C. 

      Protein

    • D. 

      Nitrite

    • E. 

      Glucose

  • 9. 
    Legal test- nitroprussie reaction. Acetoacetic acid in alkaline medium reacts with nitroferricyanide to produce a color change from beige to purple. The chemstrip and Rapignost reagent strips include glycine in the reagent pad for the reaction and detection of acetone; Multistix strips do not.
    • A. 

      Blood

    • B. 

      Ketones

    • C. 

      Proteins

    • D. 

      Specific Gravity

    • E. 

      Glucose

  • 10. 
     Azocoupling reaction of ______ with a diazonium salt in a an acid medium to form an azo dye. Color changes from light tan to beige or light pink observed. dichloro benzene diazonium tetrafluoroborate  may be used.
    • A. 

      Protein

    • B. 

      PH

    • C. 

      Glucose

    • D. 

      Nitrite

    • E. 

      Bilirubin

  • 11. 
    Azocoupling reaction of  _________ with diazoniu salt in an acid medium to form an azo dye. Color changes from light pink to dark pink are observed. It reacts with Ehrlich reagent with p-dimethylaminobenzaldehye.
    • A. 

      Bilirubin

    • B. 

      Urobilinogen

    • C. 

      Blood

    • D. 

      Protein

    • E. 

      Nitrite