Amino Acids and Protein Properties Quiz
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Questions and Answers

What is the general structure of an amino acid?

  • H$_2$NC$^{ ext{β}}$COOH
  • NH$_2$C$^{ ext{α}}$COOH (correct)
  • NH$_2$C$^{ ext{β}}$COOH
  • H$_2$NC$^{ ext{α}}$COOH

    • How are individual amino acids different from each other?

  • By their side chain group (correct)
  • By their alpha carbon
  • By their amino group
  • By their carboxyl group

    • What does 'L' and 'D' refer to in 'L-α-amino acids' and 'D-α-amino acids'?

  • 'D' means dextro and 'L' means levo
  • 'D' means left and 'L' means right
  • 'D' means right and 'L' means left (correct)
  • 'D' means levo and 'L' means dextro

    • How many amino acids constitute the monomer units of proteins?

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

    Which classification of amino acids is based on their side chains?

    <p>Glycine, Alanine, Valine</p> Signup and view all the answers

    How many amino acids are used as the monomer units of proteins?

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

    What does 'L' refer to in 'L-α-amino acids'?

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

    Which group of amino acids differ from each other with respect to their side chain group?

    <p>All amino acids differ in this aspect</p> Signup and view all the answers

    What is the general structure of an amino acid?

    <p>$NH2 - C - C=O - O- R$</p> Signup and view all the answers

    How are amino acids present in proteins named?

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

    What is the difference level of structural organization of proteins?

    <p>Primary, secondary, tertiary, and quaternary structures</p> Signup and view all the answers

    Why are all amino acids present in proteins referred to as L-α-amino acids?

    <p>They are all left-handed amino acids</p> Signup and view all the answers

    How many amino acids occur in nature and how many constitute the monomer units of proteins?

    <p>300 occur in nature; 20 constitute the monomer units of proteins</p> Signup and view all the answers

    What is the general structure of an amino acid?

    <p>$NH2 - C - C=O - O^- - R$</p> Signup and view all the answers

    How are amino acids classified based on their side chains?

    <p>$Gly$, $Ala$, $Val$, $Leu$, $Ile...</p> Signup and view all the answers

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