Physical Chemistry of Macromolecules Quiz
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Questions and Answers

What are macromolecules?

  • Very large molecules assembled from smaller molecules (correct)
  • Polymers assembled from monomers
  • Medium-sized molecules assembled from small molecules
  • Small molecules assembled from larger molecules
  • Which of the following is NOT a naturally occurring macromolecule?

  • Protein enzymes
  • DNA
  • Nylon (correct)
  • Cellulose
  • Why is it important to understand the structural features of macromolecules?

  • To calculate their density
  • To understand their physical and chemical properties (correct)
  • To measure their electrical conductivity
  • To determine their color
  • What do macromolecules give rise to that require investigation?

    <p>Molar masses and shapes</p> Signup and view all the answers

    At what different levels does the meaning of the structure of a macromolecule change?

    <p>Arrangement of building blocks levels</p> Signup and view all the answers

    What type of units compose polymers such as nylon and polystyrene?

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

    What gives the protein its unique identity?

    <p>The sequence of amino acids along the protein chain</p> Signup and view all the answers

    Which molecule is a result of the transfer of a proton from the carboxylic acid group to the amine group?

    <p>A zwitterion</p> Signup and view all the answers

    What type of polymer is shown in (b) in Figure 1?

    <p>A cross-linked polymer</p> Signup and view all the answers

    What are proteins made up of?

    <p>A large number of amino acids linked together by peptide bonds</p> Signup and view all the answers

    What gives rise to the formation of a peptide bond?

    <p>A condensation reaction between the carboxyl group of one amino acid and the amino group of another amino acid</p> Signup and view all the answers

    What predominates at near-neutral pH values?

    <p>Zwitterion formation</p> Signup and view all the answers

    What characteristic gives proteins their limitless possible arrangements of amino acids?

    <p>The fact that proteins consist of hundreds of amino acids</p> Signup and view all the answers

    What term is used for molecules containing an amine group and a carboxylic acid group?

    <p>-amino acids</p> Signup and view all the answers

    What are natural macromolecules dependent on for their shapes?

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

    Study Notes

    Macromolecules

    • Macromolecules are large molecules composed of smaller units, found naturally or synthesized.

    Importance of Structural Features

    • Understanding the structural features of macromolecules is crucial because it affects their functions and interactions.

    Characteristics of Macromolecules

    • Macromolecules give rise to complex structures and functions that require investigation.
    • The meaning of a macromolecule's structure changes at different levels, including primary, secondary, tertiary, and quaternary structures.

    Polymers

    • Polymers like nylon and polystyrene are composed of repeating units called monomers.

    Proteins

    • Proteins are made up of amino acids, which give them unique identities.
    • The transfer of a proton from a carboxylic acid group to an amine group results in a peptide bond.
    • Proteins are composed of amino acids, which are linked by peptide bonds.

    pH and Proteins

    • At near-neutral pH values, zwitterions predominate.

    Amino Acids and Proteins

    • The limitless possible arrangements of amino acids give proteins their unique characteristics.
    • Molecules containing an amine group and a carboxylic acid group are called amino acids.
    • Natural macromolecules, such as proteins, are dependent on their shapes, which are crucial for their functions.

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    Description

    Test your knowledge of macromolecules and their assembly from smaller molecules, including polysaccharides, polypeptides, and polynucleotides. This quiz covers the physical chemistry aspect of macromolecules as well as their biological and industrial significance.

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