Organic Chemistry III
	Professor Carl C. Wamser
Chem 336 - Spring Term	Pre-Quiz 28

(must be done in Blackboard before Mon., May 24, 8:30 am)

1. Which of the following is NOT a purine?

a. guanine
b. adenine
* c. uracil
d. caffeine
e. theobromine

2. Which of the following is NOT a nucleoside?

a. uridine
b. cytidine
* c. adenine
d. thymidine
e. guanosine

3. Human DNA contains about 30% T. You can also conclude that it must contain

a. 20% A
* b. 20% C
c. 30% G

4. Cyclic AMP has a phosphate ester joining

a. C-2 and C-3 of the same ribose unit
b. C-2 and C-3 of different ribose units
* c. C-3 and C-5 of the same ribose unit
d. C-3 and C-5 of different ribose units

5. The extended length of a typical human DNA chain would be about

a. 1 nanometer
b. 1 micrometer
c. 1 millimeter
* d. 1 centimeter
* e. 1 meter