Order the following choices to reflect the process of DNA replication. - DNA ligase joins the Okazaki fragments. - Primase synthesizes RNA primers. - DNA polymerase I removes the RNA primers and replaces them with DNA. - Two molecules of DNA polymerase III (one at each replication fork) build DNA by adding nucleotides onto the primers, extending them. - The leading strand is synthesized continuously while the lagging strand is synthesized in fragments (Okazaki fragments). - Helicase starts at the origin of replication separating the two strands of DNA, forming two replication forks.
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Step 1: Helicase starts at the origin of replication separating the two strands of DNA, forming two replication forks. Show more…
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Order the following steps of the DNA replication process from first to last: - Helicase untwists the double helix at the replication fork. - Single-stranded binding proteins bind the unpaired DNA strands, keeping them from re-pairing. - Topoisomerase helps relieve the strain caused by DNA untwisting. It breaks, swivels, and rejoins DNA strands. - Primase starts a complementary RNA chain using the parental DNA strand as a template. - DNA polymerase III starts adding DNA nucleotides to the 3' end of the existing RNA chain. - Elongation of leading strands occurs continuously, and elongation of lagging strands occurs via the generation of Okazaki fragments. Both are synthesized in the 5' to 3' direction. - DNA polymerase I removes the RNA primers and replaces them with DNA nucleotides. - DNA ligase joins Okazaki fragments together.
Derrick D.
Place the steps of DNA replication in order. Beginning of DNA replication 1 A different DNA polymerase is recruited and removes the RNA primers and lays down complementary bases to shorten the gaps between Okazaki fragments 2 Ligase is recruited and glues the DNA daughter strand fragments together 3 DNA polymerase lays down complementary nucleotide bases; creating both a continuous daughter strand on the 5'-3' template strand and Okazaki fragments on the 3'-5' template strand 4 Helicase unzips the DNA strands creating replication forks 5 RNA primase is recruited and lays down primers on to the template strand creating both a leading and lagging strand 6 Helicase binds to the origin of replication 7 DNA polymerase is recruited to the 3' end of the newly laid RNA primer Finished Replication
Bryan V.
Match each component of DNA replication with its best description. Helicase Topoisomerase DNA polymerase Leading strand Lagging strand Ligase RNA polymerase Separates the double stranded DNA Primase that lays down short primer Synthesized discontinuously away from the replication fork Relieves the tension from supercoiling ahead of the replication fork Synthesizes the DNA strand Enzyme that joins together Okazaki fragments Synthesized continuously following the replication fork
Suman K.
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