Worksheet #29
Supplemental Instruction
Iowa State University
Leader:
Course:
Instructor:
Date:
Mason (Substitute)
Chem 332
Stanley
12/1/15
1) Draw the following amino acids (flash cards would be a good idea for memorization) :
Glycine
Leucine
Alanine
Isoleucine
Valine
Proline
2) What does it mean if an amino acid is essential vs nonessential?
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3) Label if the following zwitterions would be in basic, neutral, or acidic solution
a)
b)
c)
4)
Indicate which form(s) of glycine (from the question above) is present at each indicated point
(Use a,b, and c which is indicated on the previous question to
pH 2.3=
pH 6=
pH 9.6=
5) Draw the product of the following reactions
Et3N
Et3N
CH3OH
HCl
1)NaOH
2)H3O+
6) Synthesis:
+
7) Mechanism
DCC