Organic Chemistry III
	Professor Carl C. Wamser
Chem 336 - Spring Term	Pre-Quiz 25

(must be done in Blackboard before Fri., April 30, 8:30 am)

1. 1,3-Dihydroxypropanone would be classified as

a. an aldotriose
* b. a ketotriose
c. an aldotetrose
d. a ketotetrose
e. none of the above

2. The C-3 epimer of D-glucose is

* a. D-allose
b. D-altrose
c. D-mannose
d. D-fructose
e. L-glucose

3. Beta-D-ribofuranose is the form of ribose in RNA. The O atom in the ring joins carbons numbered

a. 1 and 3
* b. 1 and 4
c. 1 and 5
d. 2 and 5
e. 2 and 6

4. Tartaric acid could be obtained by nitric acid oxidation of what simple sugar?

a. glyceraldehyde
* b. erythrose
c. arabinose
d. glucose
e. sucrose

5. Lactose is a disaccharide made by joining together

a. glucose and fructose
b. 2 glucose units
c. fructose and galactose
* d. glucose and galactose
e. glucose and ribose