Regular DNA replication Question 3 options: Occurs through the addition of nucleotides to the end of the parental DNA molecule Results in the formation of four new DNA strands Uses one RNA molecule as a template for the creation of a new strand Begins when two DNA molecules join together to exchange segments Not listed

Regular DNA replication Question 3 options: Occurs through the addition of nucleotides to the end of the parental DNA molecule Results in the formation of four new DNA strands Uses one RNA molecule as a template for the creation of a new strand Begins when two DNA molecules join together to exchange segments Not listed

Biology 2e

2nd Edition

ISBN:9781947172517

Author:Matthew Douglas, Jung Choi, Mary Ann Clark

Publisher:Matthew Douglas, Jung Choi, Mary Ann Clark

Chapter14: Dna Structure And Function

Section: Chapter Questions

Problem 17RQ: Which of the following is not a true statement comparing prokaryotic and eukaryotic DNA replication?...

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Match the enzymes involved in DNA replication with their function. Primase [ Choose ] [ Choose] Synthesizes short RNA segment to initiate new DNA strand Helicase Main enzyme that extends RNA primer by adding DNA nucleotides to it Stabilizes single-stranded DNA Relieves over-winding of DNA ahead of the replication fork Removes RNA primers preceding Okazaki fragment and replaces RNA nucleotides with DNA nucleotides Single-stranded binding proteins Unwinds DNA helix Synthesizes the ends of the linear chromosome Seals nicks between adjacent DNA segments DNA polymerase III [ Choose ] DNA polymerasel [ Choose ] DNA Ligase [ Choose ] Topoisomerase [ Choose ]
to 4 minutes) The schematic diagram below shows organization of the DNA replication fork. Match parts of the diagram (labeled A-F) with the corresponding term from the answer list (designated 31 parental duplex 5' 3' fork progression v A 1Lagging strand 2. An Okazaki tragment 3.Site of action of DNA topoisomerase 4 Leading strand 5. Site of action of DNA helicCase 6.Site of action of DNA ligase
Define DNA replication/synthesis and semiconservative replication. In addition, describe and/or define the role(s) of each of the following in the process of DNA replication/synthesis: DNA template strand, 5’ and 3’ ends, DNA helicase, DNA polymerase, single-strand binding proteins, topoisomerase, primase, Okazaki fragments, leading strand and lagging strand.
BONUS: Why can't RNA viruses use cellular RNA Polymerase to copy their genetic information? Because cellular RNA Polymerases are O RNA Dependent RNA Polymerase O RNA Dependent DNA Polymerase O DNA Dependent RNA Polymerase O DNA Dependent DNA Polymerase prt s home
Labeling DNA Replication Directions: Drag the lahels from the left tn corrary derti theinats of ar=rlicating strandarA 24 Newly Created Strand of ONA Replication Carke Original DNA Strand Replication Direction of Origin of Replication Directions: Bolow is a more in-depth look at a replication bubble. A.l of the psrts are still tne came, but
Which of the following is not a true statement comparing prokaryotic and eukaryotic DNA replication? Both eukaryotic and prokaryotic DNA polymerases build off RNA primers made by primase Eukaryotic DNA replication requires multiple replication forks, while prokaryotic replication uses a single origin to rapidly replicate the entire genome DNA replication always occurs in the nucleus Eukaryotic DNA replication involves more polymerases than prokaryotic replication.
Review Figures 8.12 and 8.13. In cells, the primers for DNA synthesis are short strands of RNA, so each newly-synthesized strand of DNA has a segment of RNA al its 5 end. As replication proceeds, DNA polymerases remove these RNA segments and fill in the resulting gaps with DNA. However, the gaps at the very 5 ends of the new strands cannot be filled in with DNA. Why not? DNA replication leaves exposed about 100 nucleotides al the 5 end of each template strand, and these single-stranded ends are removed. What are the effects of this "end problem" on a cell's DNA as it continues to divide? FIGURE 8.12 DNA replication. Green arrows show the direction of synthesis for each strand. The Y-shaped structure where the DNA molecule is being unwound is called a replication fork. FIGURE 8.13 Discontinuous synthesis of DNA. This close-up of a replication fork shows that only one of the two new DNA strands is assembled continuously. The other is assembled in short segments.
Circle the following elements that are directly involved in DNA replication process DNA helicase RNA primase Sliding clamp DNA polymerase DNA ligase
Doea DNA Polymerase 3 have any functions outside of DNA replication?
During DNA replication, one of the new strands of DNA is synthesized continuously, while the other is synthesized as a number of separate fragments of DNA that are subsequently linked by DNA ligase. This is because O replication starts at many points on the chromosome RNA primers only anneal to one of the parental strands of DNA one of the parental strands is unwound slower than the other by helicase DNA polymerase III only synthesizes DNA in the 5' - 3' direction
a. As a result of the structure of DNA and RNA, replication, transcription and translation are possible. What can nucleic acids do, as a result of their structure, that enables these processes to occur? The figure below shows a simplified schematic representation of a segment of DNA. The DNA is labelled with the numbers 1 – 14 for easy reference. -35 sequence Pribnow box 5' UTR 3' UTR DNA TTGACA TATAAT -35 -10 Gene a Gene B Gene y 1 2 3 4 5 6 7 8 9 10 11 12 13 14 UTR = untranslated region b. At which position on the DNA (number 1 - 14) will transcription be initiated? c. At which position on the DNA (number 1 - 14) will the first signal for translation be found? d. Between which two regions on the DNA will the polyadenylation signal be found? Use the numbers to indicate the region. e. Between which two regions on the DNA will the first Shine-Dalgarno / Ribosome Binding Sequence be found? Use the numbers to indicate the region.
1 2 3 4 5 6 7 8 9 The gaps between the DNA fragments are sealed by DNA ligase Elongation of both the lagging and the leading strand Topoisomerase binds at the region ahead of the replication fork Primase synthesizes RNA primers RNA primers are removed and gaps are filled by DNA pol I DNA unwinds at the origin of replication DNA polymerase III starts adding nucleotides Helicase opens up the DNA-forming replication forks Single-strand binding proteins coat the DNA Arrange the processes involved in DNA replication