Which of the following activities of DNA polymerase helps in preventing DNA replication errors? All of these are correct O5' to 3' exonuclease activity Proofreading (3 to 5' exonuclease activity) Opeptidyl transferase
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- In DNA replication, the fundamental reason that Okasaki fragments are produced is that Group of answer choices DNA replication can proceed only in the 5’ to 3’ direction replication on the leading strand is slower than replication on the lagging strand DNA polymerase tends to slip while replicating the lagging strand DNA polymerase has to alternate between the leading and lagging strands during replication none of these are true.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' directionWhat 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
- Which one is required for elongation step of DNA replication on the lagging strand BUT NOT in leading strand? deoxyribonucleotides O DNA topoisomerase O DNA polymerase O single-strand binding protein O DNA ligaseWhich of the following is not necessary for replication to proceed? O MRNA O RNA primer O DNA polymerase O primase O DNA ligasePLEASE HELP ME WITH THIS ONEMatch the statement to the corresponding agent/key player in DNA replication. Some items require more than one answer. Choices: Origin of replication Bubble SSBP RPA Sliding Clamp PCNA DNA Pol III Pol ε Pol δ DNA Pol I RNAse H Flap 1 DNA gyrase Pol α DNA helicase Primase Single chromosome Multiple points in chromosomes DNA ligase Not applicable Holds the processive enzyme in prokaryotes Start of replication in prokaryotes Holds the processive enzyme in eukaryotes Primosome in prokaryotes Dissociates after adding the few initial nucleotides in eukaryotes Adds more nucleotides in the lagging strand of prokaryotes Make primers for the replicative enzymes in eukaryotes Adds more nucleotides in the leading strand of prokaryotes Adds more nucleotides in the leading strand of eukaryotes Adds more nucleotides in the lagging strand of eukaryotes Start of replication in eukaryotes Removal of eukaryotic primer Breaks the H-bonds of bases Proof reading in prokaryotic…
- What role do the following enzymes play in DNA replication? DNA polymerase Helicase DNA ligaseWhich of the following statements about DNA replication is correct? Group of answer choices the leading strand is replicated continuously, while the lagging strand is replicated discontinuously on the leading strand, the new nucleotides are added only to the 5' end of the nucleotide chain on the lagging strand, the new nucleotides are added only to the 5' end of the nucleotide chain DNA polymerase works from 3'--> 5' onlyDuring DNA replication, the function of RNA primers is to Group of answer choices serve as a binding site for DNA ligase separate the two strands of the double helix to open replication "bubbles" serve as starting points for DNA strand elongation by DNA polymerase in the 3' - 5' direction prevent new-separated strands of DNA from rejoining serve as starting points for DNA strand elongation in the 5' - 3' direction by DNA polymerase
- Considening the structure of DNA, what kind of bonds hold one nucleotide to another within one side of the DNA molecule? O hydrogen O phosophodiester O lonic peptideDuring eukaryotic DNA replication, _________ synthesizes short RNA primers. The primers provide a 3'-OH group to which DNA nucleotides are be added by DNA polymerase. DNA gyrase (topoisomerase) DNA helicase DNA ligase primaseDNA polymerases are processive, which means that they remain tightly associated with the template strand while moving rapidly and adding nucleotides to the growing daughter stand. Which piece of the replication machinery accounts for this characteristic? Helicase Sliding Clamp Single Stranded Binding Protein Primase