Q4.6. What does it mean to say that extension by DNA polymerase IIl proceeds 5'-3'? The 5' end of a DNA polymerase molecule attaches to the 3' end of primase. DNA polymerase adds nucleotides to a growing strand, moving in the 5'-→3' direction. DNA polymerase seals nicks as it moves along a DNA strand toward the 3' end. DNA polymerase can only synthesize DNA at the 5' end of an existing strand of DNA. Submit Q4.7. In DNA replication, what is the difference between theleading and lagging strands? In the leading strand, DNA is synthesized 5'-3', while in the lagging strand it is synthesized 3'-5'. The leading strand is composed of DNA only, while the lagging strand is composed of both RNA and DNA. After extension, the leading strand is continuous, while the lagging strand is composed of disconnected frag The leading strand is synthesized only by DNA polymerase III, while the lagging strand is synthesized only Submit E DUA in tho process of being replicated. The RNA primer is sh

Q4.6. What does it mean to say that extension by DNA polymerase IIl proceeds 5'-3'? The 5' end of a DNA polymerase molecule attaches to the 3' end of primase. DNA polymerase adds nucleotides to a growing strand, moving in the 5'-→3' direction. DNA polymerase seals nicks as it moves along a DNA strand toward the 3' end. DNA polymerase can only synthesize DNA at the 5' end of an existing strand of DNA. Submit Q4.7. In DNA replication, what is the difference between theleading and lagging strands? In the leading strand, DNA is synthesized 5'-3', while in the lagging strand it is synthesized 3'-5'. The leading strand is composed of DNA only, while the lagging strand is composed of both RNA and DNA. After extension, the leading strand is continuous, while the lagging strand is composed of disconnected frag The leading strand is synthesized only by DNA polymerase III, while the lagging strand is synthesized only Submit E DUA in tho process of being replicated. The RNA primer is sh

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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What does i mean to say that extension by DNA polymerase III proceeds 5' 3'? The 5' end of a DNA polymerase molecule attaches to the 3' end of primase. DNA polymerase adds nucleotides to a growing strand, moving in the 5'-3' direction. O DNA polymerase seals nicks as it moves along a DNA strand toward the 3' end. DNA polymerase can only synthesize DNA at the 5' end of an existing strand of DNA. O O 0
Q4.6. What does it mean to say that extension by DNA polymerase IIl proceeds 5'-3'? The 5' end of a DNA polymerase molecule attaches to the 3' end of primase. O DNA polymerase adds nucleotides to a growing strand, moving in the 5'→3' direction. O DNA polymerase seals nicks as it moves along a DNA strand toward the 3' end. O DNA polymerase can only synthesize DNA at the 5' end of an existing strand of DNA.
McGraw-Hi P Question 17 B. What is happening at letter "C"? O RNA Primase is laying down some RNA Primer on the lagging strand O DNA Ligase is joining two Okazaki Fragments together O DNA Polymerase III is making a new DNA strand on the leading strand O DNA Polymerase I is removing RNA Primer and replacing it with DNA on the lagging strand Ouestion 18 11 MacBook Pri B.
Questions are talking about amplification of DNA When we run the gel, we also run a ladder why? what information does that give us. why does it form a ladder shape on the gel (what is happening to cause things to separate out in many bands)?
During proofreading, which of the following enzymes reads the DNA? primase topoisomerase DNA pol helicase
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.
The initial mechanism for repairing nucleotide errors in DNA is. mismatch repair DNA polymerase proofreading nucleotide excision repair thymine dimers
AKS 5b: Which statement is correct regarding the semiconservative nature of DNA? * The semiconservative nature of DNA allows for genetic stability in somatic gene production MRNA operates as a template to allow DNA to replicate itself using ribosomes The structure of the phosphate group on the DNA molecule direct the correct nucleotides into place during replication Nucleotides in each original strand serve as a template for the new strand to be made AKS 5b: Which model accurately represents the semi-conservative nature of DNA replication? * * AA AA AA AA АВ ВА AA BB AA AA АВ АС Figure A Figure B Figure C Figure D
Consider prokaryotes, choose the CORRECT enzyme/keyword for the following function/role: Removes RNA primer and replaces it with newly synthesized DNA. [ Select ]
Activity 4. Study the structure of DNA and answer the questions below. Sugar-Phosphate Backbones Nucleotide Key: O Adenine O Thymine I Guanine I Cytosine Hydrogen Bonds Antiparallel DNA Strands DNA Ladder Double Helix Fig. 9.DNA Structure. Retrieved June 19, 2020 from https://ib.bioninja.com.au/standard-level/topic-2-molecular- biology/26-structure-of-dna-and-rna/dna-structure.html 1. What are the common parts of the nucleotide? 2. Name the different kinds of nitrogenous bases found in the DNA molecule. 3. In DNA what is the paring arrangement of the bases?
5-ccuaaucg-34 3'-acctgcctataccggattagetetgatectaagcatgtc-5 The diagram above shows an RNA primer hydrogen-bonded to a DNA template. Which letter indicates the site where DNA polymerase would add nucleotides to this structure? OA OB D Any of these is possible C
Modified True or False: Write TRUE if the statement is correct, if the statement is false, change the word/ words in (parenthesis) to make it correct 1. In (ribonucleotides), the pentose sugar is deoxyribose2. (Helicase) is an enzymes that untwist the double helix at the replication forks, separating the two parental strands and making them available as template strands.3. (DNA polymerase I) bind to the unpaired DNA strands, keeping them from re-pairing.4. (DNA polymerase III) catalyzes the synthesis of new DNA by adding nucleotides to a preexisting chain.5. The enzymes that synthesize DNA cannot initiate the synthesis of a polynucleotide they need to have a (promoter) first.6. (DNA gyrase) relaxes the tension created when DNA unwind to avoid supercoiling.7. Between the two strands of a DNA segment, the nitrogen bases are held together by (phosphodiester bond).8. When the ribosome encounters (UAG) in the mRNA it will terminate translation.9. (mRNA) moves from the nucleus to the…