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    Write out the un-ionized structure of valine & phnylalanine. Do either have enantiomers?

    Write the zwitterion structures of both.

    Show what happens if it becomes more acidic.

    Write structure for phe-val (ionized or unionized). Is it the same as val-phe? Why?

    Would the dipeptide be neutral, acidic, or basic? Why?

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    Solution Preview

    I have attached a powerpoint presentation dealing with amino acids. Un-ionized basically means they don't have charges floating around. See slide 11 for the difference between un-ionized and ...

    Solution Summary

    125 word solution as well as an attached 15-page Powerpoint presentation on amino acid classifications.