BIOL 301 EXAM 1 QUESTIONS &
ANSWERS(RATED A+)
What can distinguish between RNA and DNA? - ANSWERPresence of 2' OH on
RNA
A nucleosome is composed of how many total histone molecules? - ANSWER8
Who used 32P and 35S to show the genetic information in bacteriophage T2? -
ANSWERHershey and Chase
What are the purines? - ANSWERAdenine and Guanine
What are the pyrimidines? - ANSWERCytosine and Thymine
Who performed denaturation mapping of phage DNA to demonstrate bidirectional
replication? - ANSWERSchnos and Inman
In terms of MNase digestion, a chromatosome protects ___ base pairs, while a
nucelosome protects ___ base pairs. - ANSWER166, 146
Adenine binds to Thymine by ___ hydrogen bonds, while Cytosine binds to Guanine
with ___ hydrogen bonds. - ANSWER2, 3
The special sequence of centromeres provide what function? - ANSWERSite for
spindle fiber attachment.
If it is known that a double-stranded DNA sequence is 20% adenine, what
percentage is Guanine? - ANSWER30%
In B-form DNA (the typical form of DNA in our cells), how many base-pairs are
present in one helical turn of the DNA? - ANSWER10
Who used DNase, RNase, and protease to prove that DNA was the "transforming
agent" of Strepococcus? - ANSWERAvery, MacLeod, and McCarty
Who collected data on base rations (purines equal pyrimidines)? - ANSWERChargaff
Who built the first accurate model for the structure of DNA? - ANSWERWatson and
Crick
Who transformed Type IIR bacteria into Type IIS bacteria in mice? - ANSWERGriffith
What enzyme in prokaryotes lays down the RNA primers on the lagging strand? -
ANSWERDNA primase
ANSWERS(RATED A+)
What can distinguish between RNA and DNA? - ANSWERPresence of 2' OH on
RNA
A nucleosome is composed of how many total histone molecules? - ANSWER8
Who used 32P and 35S to show the genetic information in bacteriophage T2? -
ANSWERHershey and Chase
What are the purines? - ANSWERAdenine and Guanine
What are the pyrimidines? - ANSWERCytosine and Thymine
Who performed denaturation mapping of phage DNA to demonstrate bidirectional
replication? - ANSWERSchnos and Inman
In terms of MNase digestion, a chromatosome protects ___ base pairs, while a
nucelosome protects ___ base pairs. - ANSWER166, 146
Adenine binds to Thymine by ___ hydrogen bonds, while Cytosine binds to Guanine
with ___ hydrogen bonds. - ANSWER2, 3
The special sequence of centromeres provide what function? - ANSWERSite for
spindle fiber attachment.
If it is known that a double-stranded DNA sequence is 20% adenine, what
percentage is Guanine? - ANSWER30%
In B-form DNA (the typical form of DNA in our cells), how many base-pairs are
present in one helical turn of the DNA? - ANSWER10
Who used DNase, RNase, and protease to prove that DNA was the "transforming
agent" of Strepococcus? - ANSWERAvery, MacLeod, and McCarty
Who collected data on base rations (purines equal pyrimidines)? - ANSWERChargaff
Who built the first accurate model for the structure of DNA? - ANSWERWatson and
Crick
Who transformed Type IIR bacteria into Type IIS bacteria in mice? - ANSWERGriffith
What enzyme in prokaryotes lays down the RNA primers on the lagging strand? -
ANSWERDNA primase
