5. Kazimierz Funk or Casimir Funk, was a Polish biochemist, generally credited with the first formulation of the concept of which of the following ?

[A] Amino Acids
[B] DNA
[C] RNA
[D] Vitamins

Which of the following amino acids have an acidic side chain? 0 0 0 0 0 CH CH2 CH OH IV OH OH

Draw the following amino acids in their fully protonated forms: a) Lysine b) Cysteine c) Glutamic acid d) Histidine e) Tyrosine f) Leucine For each of the amino acids in problem #2, indicate which protons are dissociable by arrows on the structures.