Biol 4003 exam 2 past quizzes with
verified answers passed
The ___________ is the feature that allows DNA to store information. - ANS ✔✔base sequence
Chargaff's studies of the base composition of various species provides evidence for - ANS
✔✔the AT/GC rule.
Which of the following could be the components of a single nucleotide found within a DNA
strand? - ANS ✔✔deoxyribose, thymine, and phosphate
Which component(s) of a nucleotide is/are not found along the DNA backbone? - ANS ✔✔bases
Which of the following proteins is/are used by a transposon, which is a transposable element
that moves via a segment of DNA? - ANS ✔✔Transposase
Which of the following is not found in a eukaryotic chromosome? - ANS ✔✔One origin of
replication
A region in a cell nucleus that is occupied by a single chromosome is a - ANS ✔✔chromosome
territory
According to the loop extrusion model, __________ promote loop formation and ___________
stablize the loop. - ANS ✔✔SMC proteins, CTCFs
Chromosome conformation capture (3C) methods provide a way to - ANS ✔✔identify DNA
segments that are close to together in three-dimensional space.
, Protein complexes called ______________ are responsible for forming ___________ in
___________. - ANS ✔✔condensins, radial loop arrays, metaphase chromosomes
_____________________ , DNA can be replicated to produce two double helices with the
identical base sequences? - ANS ✔✔Due to the AT/GC rule
What are the expected results for the Meselson and Stahl experiment after 3 generations (i.e, 3
rounds of DNA replication in the presence of light nitrogen)? Note: during generation zero, the
DNA is all heavy, and subsequent generations only make light DNA. - ANS ✔✔1/4 half heavy,
3/4 light
At the E. coli origin of replication, the DNA begins to unwind at the - ANS ✔✔AT-rich region
How many replication forks are formed at an origin of replication? - ANS ✔✔Two
Primase is needed during DNA replication because DNA polymerase is not able to - ANS
✔✔begin synthesis on a bare template strand.
How is a new DNA strand made in the leading strand? - ANS ✔✔DNA is made in the direction
toward the replication fork and is made as one continuous strand.
Which of the following is not found in a replisome? - ANS ✔✔All of the above are found in a
replisome.
During proofreading, DNA polymerase - ANS ✔✔cuts out a mismatch by digesting DNA in the 3'
to 5' direction.
verified answers passed
The ___________ is the feature that allows DNA to store information. - ANS ✔✔base sequence
Chargaff's studies of the base composition of various species provides evidence for - ANS
✔✔the AT/GC rule.
Which of the following could be the components of a single nucleotide found within a DNA
strand? - ANS ✔✔deoxyribose, thymine, and phosphate
Which component(s) of a nucleotide is/are not found along the DNA backbone? - ANS ✔✔bases
Which of the following proteins is/are used by a transposon, which is a transposable element
that moves via a segment of DNA? - ANS ✔✔Transposase
Which of the following is not found in a eukaryotic chromosome? - ANS ✔✔One origin of
replication
A region in a cell nucleus that is occupied by a single chromosome is a - ANS ✔✔chromosome
territory
According to the loop extrusion model, __________ promote loop formation and ___________
stablize the loop. - ANS ✔✔SMC proteins, CTCFs
Chromosome conformation capture (3C) methods provide a way to - ANS ✔✔identify DNA
segments that are close to together in three-dimensional space.
, Protein complexes called ______________ are responsible for forming ___________ in
___________. - ANS ✔✔condensins, radial loop arrays, metaphase chromosomes
_____________________ , DNA can be replicated to produce two double helices with the
identical base sequences? - ANS ✔✔Due to the AT/GC rule
What are the expected results for the Meselson and Stahl experiment after 3 generations (i.e, 3
rounds of DNA replication in the presence of light nitrogen)? Note: during generation zero, the
DNA is all heavy, and subsequent generations only make light DNA. - ANS ✔✔1/4 half heavy,
3/4 light
At the E. coli origin of replication, the DNA begins to unwind at the - ANS ✔✔AT-rich region
How many replication forks are formed at an origin of replication? - ANS ✔✔Two
Primase is needed during DNA replication because DNA polymerase is not able to - ANS
✔✔begin synthesis on a bare template strand.
How is a new DNA strand made in the leading strand? - ANS ✔✔DNA is made in the direction
toward the replication fork and is made as one continuous strand.
Which of the following is not found in a replisome? - ANS ✔✔All of the above are found in a
replisome.
During proofreading, DNA polymerase - ANS ✔✔cuts out a mismatch by digesting DNA in the 3'
to 5' direction.
