BIOL 301 QUIZZES WITH COMPLETE
SOLUTIONS
What can distinguish between RNA and DNA?
a. presence of a 3'-OH
b. presence of 2'-OH
c. presence of a phosphate
d. presence of a negative histone on "backbone" - Correct Answers -b. presence of 2'-
OH on the RNA
Adenine binds to Thymine through how many hydrogen bonds?
a. 1
b. 2
c. 3
d. 4
e. A doesn't bind to T - Correct Answers -b. 2
The special sequence of centromeres provides what function?
a. site for replication
b. protection from repair
c. site for spindle fiber attachment
d. protection from replication - Correct Answers -c. site fo spindle fiber attachment
A nucleosome is composed of how any total histone molecules?
a. 2
b. 4
c. 8
d. 16 - Correct Answers -c. 8 H2a, H2b H3 HC
In terms of MNase digestion, a nucleosome "protects" more DNA than a chromatosome.
a. True
b. False - Correct Answers -b. false
If it is known that a double-stranded DNA sequence is 20% adenine, what percentage of
the sequence is guanine?
a. 80%
b. 30%
c. 20%
d. we cannot tell from the information provided - Correct Answers -b. 30%
SOLUTIONS
What can distinguish between RNA and DNA?
a. presence of a 3'-OH
b. presence of 2'-OH
c. presence of a phosphate
d. presence of a negative histone on "backbone" - Correct Answers -b. presence of 2'-
OH on the RNA
Adenine binds to Thymine through how many hydrogen bonds?
a. 1
b. 2
c. 3
d. 4
e. A doesn't bind to T - Correct Answers -b. 2
The special sequence of centromeres provides what function?
a. site for replication
b. protection from repair
c. site for spindle fiber attachment
d. protection from replication - Correct Answers -c. site fo spindle fiber attachment
A nucleosome is composed of how any total histone molecules?
a. 2
b. 4
c. 8
d. 16 - Correct Answers -c. 8 H2a, H2b H3 HC
In terms of MNase digestion, a nucleosome "protects" more DNA than a chromatosome.
a. True
b. False - Correct Answers -b. false
If it is known that a double-stranded DNA sequence is 20% adenine, what percentage of
the sequence is guanine?
a. 80%
b. 30%
c. 20%
d. we cannot tell from the information provided - Correct Answers -b. 30%
