Protein Macromolecules Overview
15 Questions
1 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What is the main functional group found in amino acids?

  • Amino group (correct)
  • Hydrogen atom
  • R group
  • Carboxyl group
  • Which carbon is considered the chiral center in amino acids?

  • 2 (correct)
  • 3
  • 4
  • 1
  • What makes each amino acid unique from others?

  • An amino group
  • An R group (correct)
  • A hydrogen atom
  • A carboxyl group
  • What role does the α-carbon play in the structure of amino acids?

    <p>It acts as the chiral center</p> Signup and view all the answers

    How many substituents are directly attached to the α-carbon in amino acids?

    <p>3</p> Signup and view all the answers

    Which type of amino acids are classified by the R group into five main classes?

    <p>Nonpolar, aliphatic</p> Signup and view all the answers

    Which amino acid residue has a cyclic pyrrolidine ring structure?

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

    Which class of amino acids is characterized by having aromatic side chains and being relatively nonpolar?

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

    Which amino acid is significantly more polar than phenylalanine due to the presence of a specific functional group?

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

    What property allows tryptophan and tyrosine to absorb ultraviolet light to a greater extent compared to phenylalanine?

    <p>Presence of nitro group</p> Signup and view all the answers

    Which group of amino acids participate in hydrophobic interactions due to their nonpolar nature?

    <p>Aromatic R groups</p> Signup and view all the answers

    Which amino acid residue has an imino group held in a rigid conformation affecting the flexibility of polypeptides?

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

    Which amino acid has an aliphatic side chain with a distinctive cyclic structure?

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

    What system specifies the absolute configuration of amino acid stereoisomers?

    <p>D, L system</p> Signup and view all the answers

    What is the significance of the ring structure involving -NH2 in proline?

    <p>Holds the imino group in a rigid conformation</p> Signup and view all the answers

    More Like This

    Use Quizgecko on...
    Browser
    Browser