study.com bio 101 Ch7 QUIZ
How many replication forks are contained in each replication bubble?
2
What kind of organism was used to investigate the method of DNA Replication?
Bacteria
Why do we call DNA an antiparallel molecule?
Because the 3' and 5' ends of each strand run in opposite directions.
In which method of DNA Replication would all parent DNA be conserved in the original molecule?
Conservative
Which is the enzyme that attaches daughter nucleotides to the parent strand during DNA replication?
DNA Polymerase
What is the cellular process in which a new copy of DNA is created?
DNA Replication
The enzyme responsible for unwinding the double helix is
DNA helicase.
Which enzyme is responsible for binding Okazaki fragments together?
DNA ligase
Which enzyme is responsible for laying down the daughter nucleotides during DNA replication?
DNA polymerase
In which method of DNA Replication would new DNA consist of alternating parent and daughter DNA?
Dispersive
What links together the nitrogenous bases in the center of the DNA molecule?
Hydrogen bonds
Why can't DNA polymerase work continuously on both parent strands?
It only works in the 3' to 5' direction.
Who performed the experiment that proved semi-conservative DNA replication was correct?
Matthew Meselson and Franklin Stahl
Why does N-15 DNA sink to a lower level than N-14 in a centrifuge tube?
N-15 DNA has a higher density than N-14 DNA.
How is the N-15 isotope different from the N-14 atom?
N-15 has one extra neutron.
What are the small components (monomers) that make up the large DNA polymer?
Nucleotides
On the lagging strand, one RNA primer is required for the beginning of every...
Okazaki fragment.
Which is the enzyme that builds the RNA primer?
RNA Primase
What happens to the RNA primer once DNA replication is begun by DNA polymerase?
The primer is removed.
Which word part is used to designate that a molecule is an enzyme?
The suffix '-ase'
What happens to the replication bubbles in order to complete replication?
They grow and merge together.
at is the role of DNA polymerase?
To assemble daughter nucleotides on the parent strand.
What is the purpose of the RNA primer?
To initiate the process of DNA replication.
The location where the process of DNA replication begins is called the
origin of replication.
When DNA helicase separates the two parental strands, it creates a Y-shape called a
replication fork.
Because hydrogen bonds are weak bonds, they create a perfect site for...
separating nucleic acid strands.
Which of the parent DNA strands is replicated discontinuously?
the lagging strand
Which is the strand that replicates just as quickly as the replication fork opens up?
the leading strand
The Dispersive method of DNA Replication was disproved when the scientists observed...
two separate bands of DNA of different densities.
