Physical Chemistry of Macromolecules Quiz
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Questions and Answers

What are macromolecules?

  • Molecules found in living organisms
  • Large molecules assembled from smaller molecules biosynthetically (correct)
  • Substances with small molecules assembled from smaller units
  • Naturally occurring macromolecules

    • Which of the following is a naturally occurring macromolecule?

  • Protein enzymes
  • Polystyrene
  • Cellulose (correct)
  • Nylon

    • Why do you need to understand the structural features of macromolecules?

  • To analyze their chemical composition
  • To describe their physical and chemical properties (correct)
  • To understand how they are made in industrial reactors
  • To identify their monomers

    • What special problems do macromolecules give rise to?

    <p>Investigation and description of their molar masses and shapes</p> Signup and view all the answers

    At what different levels does the structure of a macromolecule take on different meanings?

    <p>At different levels at which the arrangement of the chain or network of its building blocks is considered</p> Signup and view all the answers

    What do you need to know already about macromolecules?

    <p>How to describe the structural features of macromolecules</p> Signup and view all the answers

    What gives a protein its unique identity?

    <p>The variety of amino acids linked together</p> Signup and view all the answers

    What type of bond is formed by a condensation reaction between the carboxyl group of one amino acid and the amino group of another amino acid?

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

    What is the general formula for an α-amino acid?

    <p>$RCH(NH_{2})COOH$</p> Signup and view all the answers

    What is the predominant form of an amino acid at near-neutral pH values?

    <p>Doubly ionized form</p> Signup and view all the answers

    Which type of polymer includes a mixture of two different monomers?

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

    What is formed when a large number of amino acids are linked together by peptide bonds?

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

    What gives rise to self-assembly in proteins, resulting in their specific shapes?

    <p>Nonbonding interactions between molecules</p> Signup and view all the answers

    What are proteins composed of?

    <p>Up to 22 different types of amino acids</p> Signup and view all the answers

    What is the result of the transfer of a proton from the carboxylic acid group to the amine group in an amino acid?

    <p>Formation of a zwitterion</p> Signup and view all the answers

    What is the unique feature of α-amino acids in terms of the location of the amino group?

    <p>Amino group located one carbon atom away from the carboxylic acid group</p> Signup and view all the answers

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