Biological Macromolecules and Proteins
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Questions and Answers

Which type of proteins enable cells to respond to chemical stimuli from the environment?

  • Motility proteins
  • Enzymes
  • Receptor proteins (correct)
  • Structural proteins
  • How many major classes do proteins fall into?

  • Seven
  • Five
  • Ten
  • Nine (correct)
  • What is the central element common to all amino acids in their structure?

  • R group
  • Amino group
  • Side chain
  • α carbon atom (correct)
  • Which type of amino acids have hydrophobic R groups?

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

    What is the primary reason for the uniqueness of each protein's amino acid sequence?

    <p>Amino acids have unique side chains</p> Signup and view all the answers

    Why are receptor proteins crucial for cells?

    <p>To enable cells to respond to chemical stimuli from the environment</p> Signup and view all the answers

    What is the role of structural proteins in cells?

    <p>Support and shape</p> Signup and view all the answers

    Why are transport proteins important in cellular processes?

    <p>To move substances into and out of cells</p> Signup and view all the answers

    What is a key characteristic of acidic amino acids?

    <p>They are negatively charged</p> Signup and view all the answers

    How many different types of amino acids are used in protein synthesis?

    <p>20</p> Signup and view all the answers

    What determines the specific properties of amino acids?

    <p>The nature of their R groups</p> Signup and view all the answers

    What sets glycine apart from other amino acids in terms of its structure?

    <p>It is the only one with an asymmetric α carbon atom</p> Signup and view all the answers

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