Proteins and Amino Acids Overview
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Questions and Answers

What type of bond is formed by dehydration from the carboxyl group of one amino acid and the amino group of another amino acid?

  • Peptide bond (correct)
  • Ionic bond
  • Ester bond
  • Glycosidic bond
  • Which of the following describes the role of primary structure in proteins?

  • Determines the spatial arrangement of the main-chain atoms
  • Affects the folding domains in polypeptides
  • Forms secondary structures like alpha helices
  • Conveys the function of a protein (correct)
  • What is the most common type of secondary structure in proteins?

  • Random coil
  • Alpha helix (correct)
  • Beta sheet
  • Beta turn
  • In which type of beta-conformation do hydrogen bonds form between backbone atoms of adjacent segments?

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

    What type of turn connects the ends of two adjacent segments in an antiparallel beta sheet?

    <p>Beta turn</p> Signup and view all the answers

    Which amino acid residues are commonly involved in beta turns?

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

    Which level of protein structure refers to the folding domains that are basic units of structure and function?

    <p>Tertiary structure</p> Signup and view all the answers

    'Oligopeptide' typically consists of how many amino acids?

    <p>&lt; 10 amino acids</p> Signup and view all the answers

    What type of bond is broken by oxidation with performic acid or reduction by dithiothreitol?

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

    What type of secondary structure describes the spatial arrangement of the main-chain atoms in a segment of polypeptide chain?

    <p>Random coil</p> Signup and view all the answers

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