Organic Chemistry III
	Professor Carl C. Wamser
Chem 336 - Spring 2009	Pre-Quiz 27

(must be done in Blackboard before Mon., May 18, 8:30 am)

1. At pH 7, the expected overall charge on Arg would be

a. -2
b. -1
c. neutral
* d. +1
e. +2

2. Functional groups present in the tripeptide GluProTyr include all of the following EXCEPT

a. carboxylic acid
* b. ester
c. amide
d. amine
e. phenol

3. Adrenaline is synthesized from which amino acid?

a. His
b. Lys
* c. Tyr
d. Ala
e. Pro

4. An alpha-helix is an example of what level of protein structure?

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

5. Chymotrypsin would react with the tetrapeptide Arg-Phe-Leu-Pro to give

a. no reaction
b. a tripeptide + an amino acid
* c. two dipeptides
d. a dipeptide and two amino acids
e. four amino acids