Other questions in this quiz

2. The amino acids with 'acidic R groups' are characterised by?

  • side chains with a negative physiological pH
  • the AA's aspartate and glutamate. The negatively charged side chains can form electrostatic interactions with positively charged basic side chains.
  • the AA's lysine and arginine. The negatively charged side chains can form electrostatic interactions with positively charged basic side chains
  • side chains with a positive physiological pH

3. The AA's hydroxyproline and hydroxylysine...

  • are translated from specific DNA sequences
  • are hydroxylated forms of proline and lysine, which require vit C as an enzyme cofactor for the synthesis and are found at high levels in collagen
  • are hydroxylated forms of proline and lysine, thus not encoded by the genetic code
  • are hydroxylated forms of proline and lysine, which require vit C as an enzyme cofactor for their synthesis

4. The AA with 'non-polar' aliphatic R groups are characterised by:

  • high levels of acidic or basic groups
  • high levels of carbon and hydrogen in the side chain
  • high levels of hydrogen bonding between carbon and hydrogen atoms in the side chain
  • high levels of carbon and oxygen atoms in the side chain

5. Desmosine is an AA...

  • formed of four hydroxylysine residues
  • formed of four hydroxyproline and hydroxylysine residues
  • formed of four glycine residues
  • formed of four lysine residues
  • formed of four hydroxyproline residues

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