Amino Acids Classification and Properties
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Questions and Answers

What is the range for the change in values mentioned in the text?

  • -1800 to 0 (correct)
  • -1800 to 1800
  • 0 to 1800
  • 0 to 3600

    • Which type of bond has partial double bond character due to the text?

  • Peptide bond (correct)
  • Ionic bond
  • Covalent bond
  • Hydrogen bond

    • What characterizes the peptide bond as mentioned in the text?

  • Fully positive N and fully negative O
  • No charge distribution
  • Fully nonpolar
  • Partially positive N and partially negative O (correct)

    • Which scientist proposed the concept of alpha helix and beta sheet in proteins in 1951?

    <p>Linus Pauling (B)</p> Signup and view all the answers

    What is the main characteristic of secondary structure of a polypeptide chain as per the text?

    <p>The backbone atoms are planar (D)</p> Signup and view all the answers

    Which structure type stabilizes local structures in proteins through hydrogen bonds?

    <p>Beta sheet (C)</p> Signup and view all the answers

    What did Linus Pauling win the Nobel Prize in Chemistry for in 1954?

    <p>Proposing alpha helix and beta sheet in proteins (C)</p> Signup and view all the answers

    'Zwitterions' refers to molecules with:

    <p>+1 and -1 charges simultaneously (A)</p> Signup and view all the answers

    'pKa values' are used primarily to determine:

    <p>Charge of amino acids at a specific pH (D)</p> Signup and view all the answers

    What is the main reason for the planar nature of peptide bond groups?

    <p>Presence of double bond character (D)</p> Signup and view all the answers

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