Biochemical Techniques Quiz
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Questions and Answers

What is the primary purpose of biochemical techniques?

  • To separate mixtures of substances based on their affinities
  • To analyze the functions of biomolecules like proteins and nucleic acids (correct)
  • To study the history of biochemistry
  • To explore the latest research developments in the field of genetics
  • Which technique is commonly used for separating mixtures based on their affinities?

  • PCR
  • Spectrophotometry
  • Centrifugation
  • Chromatography (correct)
  • In centrifugation, particles are separated from a solution based on their:

  • Color
  • Pressure
  • Temperature
  • Size, shape, density, viscosity, and rotor speed (correct)
  • What is one common application of biochemical techniques in modern research?

    <p>Studying the genetic material and its functions</p> Signup and view all the answers

    Which technique is used to amplify a segment of DNA in molecular biology?

    <p>Polymerase chain reaction (PCR)</p> Signup and view all the answers

    What is the major difference between differential centrifugation and density-gradient centrifugation?

    <p>Separation based on density vs. separation based on size</p> Signup and view all the answers

    Which type of electrophoresis involves the movement of charged particles under an electric field?

    <p>Moving boundary electrophoresis</p> Signup and view all the answers

    What does spectrophotometry measure in a solution?

    <p>Concentration of solutes by light absorption</p> Signup and view all the answers

    Who was the first to identify DNA as a distinct molecule?

    <p>Oswald Avery</p> Signup and view all the answers

    Which scientist demonstrated that the enzyme urease was a pure protein and crystallized it?

    <p>James B. Sumner</p> Signup and view all the answers

    In what year did James Watson and Francis Crick derive the three-dimensional and double-helical model of DNA?

    <p>1953</p> Signup and view all the answers

    What event marked the starting point for the birth of Biochemistry according to the text?

    <p>The demonstration that fermentation results from enzymes in yeast</p> Signup and view all the answers

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