Dna replication quizlet Study with Quizlet and memorize flashcards containing terms like What is the role of DNA gyrase in DNA replication in bacteria? A) Initiates replication B) Unwinds the DNA double helix C) Synthesizes RNA primers D) Seals nicks in the DNA strands, Which enzyme catalyzes the negative supercoiling of double-stranded closed-circular DNA in bacteria? Study with Quizlet and memorize flashcards containing terms like DNA replication occurs during the __ phase of _____ of the cell cycle, DNA replication produces, During the process of DNA replication, each _____ chain serves as a _____ for making a copy of the other chain. Initiates irreversible decision for cells to divide. DNA replication is initiated by primase, which synthesizes short RNA primers that are later removed and replaced with DNA. Replication. 7. What does DNA polymerase do? 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DNA Structure and Replication quiz for 8th grade students. , In DNA replication, the _____ strand is made discontinuously in the direction opposite to the Definition: A monomer used by DNA polymerase to polymerize DNA. Study with Quizlet and memorize flashcards containing terms like What is the final product of DNA Replication?, What are the sides of the helix made up of, What is the function of DNA polymerase 1? and more. Quiz yourself with questions and answers for DNA Replication Quiz, so you can be ready for test day. , The areas at the tips of the arrows in this replicating molecule of DNA are called the _____ _____. Study with Quizlet and memorize flashcards containing terms like In the cell cycle, when does DNA replication occur?, semi-conservative replication, centromere and more. Small fragments of DNA produced on the lagging strand during DNA replication, joined later by DNA ligase to form a complete strand. *Because replication takes place in the 5' to 3' direction only, the lagging strand consists of short 5' to 3' segments called Okazaki fragments. Uses Okazaki fragments. Study with Quizlet and memorize flashcards containing terms like DNA replication, origin of replication, replication bubble and more. ? and more. _____ replication uses multiple ORI's (replication bubble on the chromosomes). C. Single Strand Bonding Proteins attaches to halfs and keeps the DNA molecules separated. Replication is _____? - each daughter chromosome contains one of the parental DNA strands and one newly synthesized complementary strand. Replication is also a _____? -replication begins at a site of origin and simultaneously moves out in both Study with Quizlet and memorize flashcards containing terms like DNA Replication, DNA Replication Steps, DNA Helicase and more. 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Genetics Chapter 2. . 11 terms. Caleb_DeGood. Study with Quizlet and memorize flashcards containing terms like DNA replication, Enzymes involved in DNA, Function of Helicase and more. Energetically expensive S phase (2n-->4n): DNA replication - the entire genome is unwound and duplicated to form two daughter chromosomal copies G2 phase (4n) : the tetraploid cell prepares for mitosis, any damaged DNA or Study with Quizlet and memorize flashcards containing terms like DNA replication depends on what?, DNA replication follows what?, What happens first inn the semi model? and more. Genes & Genomes Final Exam. DNA polymerase ε (Pol ε) PCNA: trimeric complex that threads onto DNA and prevents the whole complex from falling off the template. an enzyme that eventually joins the sugar-phosphate backbones of the Okazaki fragments. 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Completes synthesis of Study with Quizlet and memorize flashcards containing terms like When is DNA copied?, Where is DNA copied is eukaryotes?, The process of copying DNA is known as _____ _____ and more. 12 terms. Study with Quizlet and memorise flashcards containing terms like What is DNA replication?, Step 1, step 2 and others. 2. Study with Quizlet and memorize flashcards containing terms like what is the structure of DNA? How are DNA strands oriented? How do the nucleotides fit together? How does the structure lead to the function of copying itself, How does DNA replication occur? What are the important enzymes in this process, and what are their roles?, Why are errors in replication "bad"? How Study with Quizlet and memorize flashcards containing terms like Semiconservative, replication begins at a site of origin and simultaneously moves out in both directions from this point, Okasaki fragments and more. 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During DNA replication, the DNA molecule separates into two strands, then produces two new complementary strands following the rules of base pairing. Energy from ATP is used to produce the nucleotides, unwind the DNA, and build the new strands. 6. New RNA Primer for each fragment. B. Study with Quizlet and memorize flashcards containing terms like 2' deoxyribonucleoside triphosphate, Base-pair excision, In DNA replication, the strand of pre-existing DNA that is oriented in the 5' to 3' direction with respect to the direction Study with Quizlet and memorize flashcards containing terms like What is the difference between a nucleoside and a nucleotide?, What does DNA helicase enzyme do to the DNA molecule?, What does the DNA polymerase do to the DNA molecule? and more. 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RNAse H, which recognizes RNA-DNA hybrid helices, degrades the RNA by hydrolyzing its phosphodiester DNA helicase - unwinds double helix Topoisomerases - diminish supercoiling (due to unwinding) by making a nick in one strand ahead of the replication fork DNA single strand binding proteins - expose and stabilize single stranded DNA, prevent from reannealing (not sure if enzyme) DNA polymerase - makes new DNA, only extends a DNA strand from 5' to 3' end, adds nucleotides Study with Quizlet and memorize flashcards containing terms like Replication Origin An enzyme that untwists the double helix of DNA at the replication forks. Detailed quiz intended for advanced biology students. Teacher 11 terms. A discontinuously synthesized DNA strand that elongates by means of Okazaki fragments, each synthesized in a 5' to 3' direction away from the replication fork. MCB 181 EXAM 3! 56 terms. 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Study with Quizlet and memorize flashcards containing terms like Step 1: Starts at?, Step 2: Unwinds, Step 3: Holds strands and more. Study with Quizlet and memorize flashcards containing terms like DnaA, DnaB, DnaC and more. It is dispersive, involving a mix of new and old DNA within each strand. RNA primer is removed by DNA polymerase I. *joins discontinous DNA fragments *during DNA replication, this produces a continuous lagging strand *For example, ligases join the Okazaki fragments of the lagging strand to yield one continuous DNA strand. Mr_Yoko. , DNA replication begins at a site called the _____of _____. , DNA is replicated during the (blank) of the cell cycle. Study with Quizlet and memorize flashcards containing terms like DNA replication is the process by which DNA is-----during the cell cycle?, DNA replication takes place in the -----of a EUKARYOTIC cell?, DNA is replicated during the ----stage of the cell cycle? and more. 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Mechanism of Replication:-During the process of replication, _____ adds nucleotides onto an existing 3' end in a templated manner. sekotastotz. RNAse H, which recognizes RNA-DNA hybrid helices, degrades the RNA by hydrolyzing its phosphodiester DNA REPLICATION: Before the lagging-strand DNA exits the replication factory, its RNA primers must be removed and the Okazaki fragments must be joined together to create a continuous DNA strand. Take sample after each generation time (cell doubling) and analyze density. Study with Quizlet and memorize flashcards containing terms like RNA Replication, DNA Polymerase, Key Features of DNA polymerases: and more. Study with Quizlet and memorize flashcards containing terms like During telomere synthesis, the enzyme _____ binds to the 3' overhang region and synthesizes many 6- _____ repeats. DNA repair and gap filling are done by DNA polymerase I. Helicase cuts hydrogen bonds and separates DNA in Study with Quizlet and memorize flashcards containing terms like Helicase, primase, DNA Polymerase and more. Study with Quizlet and memorize flashcards containing terms like DNA Replication, DNA helicase, DNA Polymerase and more. Study with Quizlet and memorize flashcards containing terms like 4 steps of DNA replication?, A double stranded DNA molecule has an, Proteins bind to _____ and separate _____ strands? and more. The strand of DNA that is replicated in the direction opposite to the movement of the replication fork; replicated discontinuously as a series of Okazaki fragments, each 1,000-2,000 nucleotides in length. 4. RNAse H, which recognizes RNA-DNA hybrid helices, degrades the RNA by hydrolyzing its phosphodiester An enzyme that catalyzes the elongation of new DNA (for example, at a replication fork) by the addition of nucleotides to the 3′ end of an existing chain. You'll learn about the structure of DNA, the roles of helicase and polymerase, and the difference between leading and lagging Quiz over DNA, covering molecular processes such as replication, transciption, translation. Study with Quizlet and memorize flashcards containing terms like The semiconservative nature of DNA replication, replication fork/bubble, Okazaki fragments and more. , Describe the role of helicases and DNA polymerases during DNA replication. DNA replication is carried out by enzymes that "unzip" a molecule of DNA. The sole purpose of DNA replication is to generate identical DNA molecules, as they are the blueprint that makes life possible. Study with Quizlet and memorize flashcards containing terms like DNA polymerase, DNA polymerase I, As with all known DNA polymerases, all three of these enzymes synthesize polynucleotide strands only in the 5' to 3' direction and require a primer and more. Study with Quizlet and memorize flashcards containing terms like DNA replication, Why is this process considered to be a semi-conservative form of replication?, How is the process of DNA replication initiated? and more. coli, what do replicative DNA polymerases require? and more. DNA is a double helix, one strand going 5' to 3'(leading) and the other going 3' to 5'(lagging). , State why DNA replication is a semi-conservative process. , Replication follows a ____-_____ pattern. Study with Quizlet and memorize flashcards containing terms like Semi-conservative, Single strand binding proteins, Helicase and more. What process thingy?, DNA replication relies on what, During replication process, two complementary strands of DNA come apart and serve as the BLANK strand for the synthesis Study with Quizlet and memorize flashcards containing terms like DNA replication occurs during ____ phase. 20 terms. 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