Intro to Molecular Cell Biology Test
Bank Chapter 6 (2025-2026) Test
Exam with Correct Verified and Well
Analyzed Answers Graded A+
The process of DNA replication requires that each of the parental DNA
strands be used as a ____________ to produce a duplicate of the
opposing strand.
(a) catalyst
(b) competitor
(c) template
(d) copy
(c) template
DNA replication is considered semiconservative because
__________________________________.
(a) after many rounds of DNA replication, the original DNA double
helix is still intact.
(b) each daughter DNA molecule consists of two new strands copied
form the parent
(c) each daughter DNA molecule consists of one strand from the
parent DNA molecule and one new strand.
(c) each daughter DNA molecule consists of one strand from the
parent DNA molecule and one new strand
The classic experiment conducted by Meselson and Stahl
demonstrated that DNA replication is accomplished by employing a
______________ mechanism.
semiconservative
Initiator proteins bind to replication origins and disrupt hydrogen
bonds between the two DNA strands being copied. Which of the
factors below does not contribute to the relative ease of strand
separation by initiator proteins?
, (a) replication origins are rich in A-T base pairs
(b) the reaction can occur at room temperature
(c) they only separate a few base pairs at a time
(d) once opened, other portions of the DNA replication machinery
bind to the origin
(b) the reaction can occur at room temperature
If the genome of the bacterium E. coli requires about 20 minutes to
replicate itself, how can the genome of a fruit fly be replicated in only
3 minutes?
(a) The fruit fly genome is smaller than E coli
(b) Eukaryotic DNA polymerase synthesizes DNA at a much faster rate
than prokaryotic
(c) The nuclear membrane keeps the fruit fly DNA concentrated in one
place in the cell, which increases the rate of polymerization
(d) Fruit fly DNA contains more origins of replication than E coli DNA.
(d) Fruit fly DNA contains more origins of replication than E coli DNA
True or false?
When DNA is being replicated inside a cell, local heating occurs,
allowing the two strands to separate.
False. This is accomplished by initiated proteins binding at the origin
of replication.
True or false?
DNA replication origins are typically rich in G-C base pairs.
They are rich in A-T base pairs which makes it easier for them to
separate the strands because they are only held together by two
hydrogen bonds
True or false?
Meselson and Stahl ruled out the dispersive model for DNA
replication.
true
True or false?
DNA replication is a bidirectional process that is initiated at multiple
locations among chromosomes in eukaryotic cells.
True
Bank Chapter 6 (2025-2026) Test
Exam with Correct Verified and Well
Analyzed Answers Graded A+
The process of DNA replication requires that each of the parental DNA
strands be used as a ____________ to produce a duplicate of the
opposing strand.
(a) catalyst
(b) competitor
(c) template
(d) copy
(c) template
DNA replication is considered semiconservative because
__________________________________.
(a) after many rounds of DNA replication, the original DNA double
helix is still intact.
(b) each daughter DNA molecule consists of two new strands copied
form the parent
(c) each daughter DNA molecule consists of one strand from the
parent DNA molecule and one new strand.
(c) each daughter DNA molecule consists of one strand from the
parent DNA molecule and one new strand
The classic experiment conducted by Meselson and Stahl
demonstrated that DNA replication is accomplished by employing a
______________ mechanism.
semiconservative
Initiator proteins bind to replication origins and disrupt hydrogen
bonds between the two DNA strands being copied. Which of the
factors below does not contribute to the relative ease of strand
separation by initiator proteins?
, (a) replication origins are rich in A-T base pairs
(b) the reaction can occur at room temperature
(c) they only separate a few base pairs at a time
(d) once opened, other portions of the DNA replication machinery
bind to the origin
(b) the reaction can occur at room temperature
If the genome of the bacterium E. coli requires about 20 minutes to
replicate itself, how can the genome of a fruit fly be replicated in only
3 minutes?
(a) The fruit fly genome is smaller than E coli
(b) Eukaryotic DNA polymerase synthesizes DNA at a much faster rate
than prokaryotic
(c) The nuclear membrane keeps the fruit fly DNA concentrated in one
place in the cell, which increases the rate of polymerization
(d) Fruit fly DNA contains more origins of replication than E coli DNA.
(d) Fruit fly DNA contains more origins of replication than E coli DNA
True or false?
When DNA is being replicated inside a cell, local heating occurs,
allowing the two strands to separate.
False. This is accomplished by initiated proteins binding at the origin
of replication.
True or false?
DNA replication origins are typically rich in G-C base pairs.
They are rich in A-T base pairs which makes it easier for them to
separate the strands because they are only held together by two
hydrogen bonds
True or false?
Meselson and Stahl ruled out the dispersive model for DNA
replication.
true
True or false?
DNA replication is a bidirectional process that is initiated at multiple
locations among chromosomes in eukaryotic cells.
True
