Blood Detection Methods Quiz
5 Questions
2 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What is the principle of the Benzidine test?

  • The haem group of haemoglobin possesses a peroxidase-like activity which catalyses the breakdown of hydrogen peroxide (correct)
  • The formation of haemoglobin derivative crystals such as haematin, haemin and haemochromogen
  • The sensitivity of the test to detect bloodstains
  • The reaction of haemoglobin with Nippe’s Reagent

    • What can cause false positives in crystal tests?

  • Substances other than heme which possess a similar peroxidase-like activity (correct)
  • The sensitivity of the test
  • The presence of haemoglobin derivative crystals
  • Chemical oxidants

    • What is the sensitivity of crystal tests to detect haemoglobin?

  • About 0.1 mL of blood or 0.01 mg of haemoglobin
  • About 0.01 mL of blood or 1 mg of haemoglobin
  • About 1 mL of blood or 0.001 mg of haemoglobin
  • About 0.001 mL of blood or 0.1 mg of haemoglobin (correct)

    • What is the composition of Nippe’s Reagent?

    <p>0.1gm KCl + 0.1 gm KBr + 0.1 gm KI in 100 ml glacial acetic acid</p> Signup and view all the answers

    What is the procedure for the Benzidine test?

    <p>Dissolve some benzidine crystals in 0.5 ml of glacial acetic acid, add 1 ml dist. Water + 1 drop blood, add a few drops of H2O2 and observe the color</p> Signup and view all the answers

    More Like This

    Cell Disruption Methods in Laboratory
    10 questions

    Cell Disruption Methods in Laboratory

    ImmenseInequality avatar
    ImmenseInequality
    Sterilization and Disinfection Methods Quiz
    29 questions

    Sterilization and Disinfection Methods Quiz

    NavigableStar7432 avatar
    NavigableStar7432
    Analytical Chemistry Methods
    34 questions

    Analytical Chemistry Methods

    ReadyLaplace5629 avatar
    ReadyLaplace5629
    Electrochemistry Principles and Applications
    54 questions

    Electrochemistry Principles and Applications

    UnrivaledAlpenhorn avatar
    UnrivaledAlpenhorn
    Use Quizgecko on...
    Browser
    Open
    Browser
    Browser