2. Which of the following strands of RNA would be complementary to the strand AACUG?
*a. UUGAC
b. GACUU
c. GGUCA
d. UUCAG
3. The process by which RNA is synthesized from a strand of DNA is called:
*a. transcription
b. transaction
c. translation
d. transition
4. The "super molecule" which synthesizes a protein from a strand of
messenger RNA is called:
a. transfer RNA
*b. a ribosome
c. a double helix
d. an enzyme
5. Describe the difference between the structures of:
a. RNA and DNA - RNA is single stranded and contains ribose and
uracil (along with A, C, G and phosphate). DNA is double stranded and contains deoxyribose
and thymine (along with A, C, G and phosphate).
b. a single strand and a double helix - A single strand of
nucleic acid consists of a backbone of alternating phosphate and sugar units with bases
attached to the sugars (see answer to question one above). A double strand consists of two
single strands lined up with complementary bases facing one another. A double helix is a
double strand twisted (naturally) into a helix.
6. A codon consists of a sequence of how many bases?
a. 2
*b. 3
c. 4
d. 5
e. 6
7. The anticodon is a portion of:
a. the ribosome
*b. a transfer-RNA
c. the DNA
d. the messenger-RNA
8. Briefly outline the means by which an enzyme uses ATP to drive an endothermic
reaction.
ATP can be hydrolyzed to form ADP and phosphate. This is an
exothermic reaction. Some enzymes are capable of catalyzing this reaction and channeling
the released energy into an endothermic reaction.
9. The primary function of DNA in living cells is to store and transfer:
a. electrons
b. energy
c. enzymes
*d. genetic information
e. photosynthesis
10. The bonding that holds the two strands of DNA together consist of ________ bonds.
a. amide
b. ester
c. glucosidic
*d. hydrogen
e. peptide
Top of Page
E-mail instructor:
Sue Eggling
Clackamas Community College
©2001, 2003 Clackamas Community College, Hal Bender
