Organic Chemistry III
	Professor Carl C. Wamser
Chem 336 - Spring 2008	Pre-Quiz 27

(must be done in Blackboard before Mon., May 19, 8:30 am)

1. The tripeptide GluLysSer contains all of the following functional groups except

a. amide
b. carboxylic acid
c. amine
* d. thiol
e. alcohol

2. At a pH of 1, the expected charge on the dipeptide LysCys would be

a. +3
* b. +2
c. +1
d. neutral
e. negative

3. Histamine is converted from histidine by

a. transamination
b. alkylation
c. deprotonation
* d. decarboxylation
e. hydrolysis

4. An alpha-helix is an example of a protein's

a. primary structure
* b. secondary structure
c. tertiary structure
d. quaternary structure

5. Edman degradation is a useful method for determining a protein's

* a. primary structure
b. secondary structure
c. tertiary structure
d. quaternary structure