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Biochemistry Lab 3: Denaturing of Proteins
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Biochemistry Lab 3: Denaturing of Proteins

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Questions and Answers

What is denaturation of proteins?

  • A process where a protein increases in size due to the addition of amino acids
  • A process where a protein loses its native shape and becomes biologically inactive (correct)
  • A process where a protein gains its native shape
  • A process where a protein changes its function

    • Which factor causes denaturation of proteins by disrupting hydrophobic interactions?

  • Acid
  • Radiation
  • Alcohol (correct)
  • Heat

    • How does changing pH affect protein denaturation?

  • It enhances the protein's biological activity
  • It denatures the protein by altering charges on side chains (correct)
  • It decreases the size of the protein
  • It has no effect on the protein's structure

    • Which of the following is NOT an agent causing denaturation of proteins?

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

    What happens to a denatured antibody?

    <p>It loses its ability to bind to antigens</p> Signup and view all the answers

    Why does increasing temperature lead to protein denaturation?

    <p>It disrupts the attractive forces that hold the protein's shape</p> Signup and view all the answers

    What is the denaturation process that occurs at higher temperatures called?

    <p>Heat denaturation</p> Signup and view all the answers

    During denaturation, which type of bond is NOT broken?

    <p>Peptide bonds</p> Signup and view all the answers

    What is the purpose of adding egg white to boiling water in the experiment described?

    <p>To observe heat denaturation</p> Signup and view all the answers

    What happens when egg white is subjected to vigorous shaking in a container?

    <p>Mechanical denaturation</p> Signup and view all the answers

    Which component is NOT used in the experiment described for observing denaturation?

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

    What bonds are broken during denaturation according to the text?

    <p>Disulfide bonds and hydrophobic interactions</p> Signup and view all the answers

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