DNA REPLICATION VOCABULARY LIST Nucleotide Replication Fork 3'OH group Ribose 5' Phosphate group Antiparallel DNA Polymerase Telomerase Primase Helicase Ligase Origin of Replication Primer Leading Strand Lagging Strand A. ribose is the name of the 5 carbon sugar that is part of the DNA nucleotide. B. The is the strand polymerized by DNA polymerase more slowly than the because DNA polymerase must polymerase that strand in small sections. C. If were to malfunction, the result would be several nicks or breaks in the DNA backbone. D. The difference between and is the presence or absence of a 2'OH group off the ribose sugar. E. If were to malfunction both the leading and lagging strands of DNA replication would be unable to start due to the lack of a F. The double stranded structure of DNA is called because at one end of the DNA will be two different functional groups. One strand will end with a and the other strand will end with a G. unwinds the DNA and pulls the two strands apart. H. The is polymerized in the 5' to 3' direction towards the so it is made in one complete segment. I. DNA Polymerase requires an initial to start replication which is added by J. Linear chromosome ends require to extend the ends by added repeated sections to the 3' ends.
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In this diagram of the process of DNA replication at a replication fork, the strand labeled 'B' is the: a) template strand b) lagging strand c) leading strand d) Okazaki fragment e) RNA primer In the same diagram (above) of the process of DNA replication at a replication fork, the black boxes labeled D and E are: a) Newly synthesized DNA b) DNA template strands c) Okazaki fragments d) DNA polymerase e) RNA primers DNA ligase catalyzes the formation of a bond between the a) 3' phosphate of one nucleotide and the 3'OH group of the next b) 5' OH group of one nucleotide and the 3' OH group of the next c) 3' phosphate of one nucleotide and the 5'OH of the next d) 5' phosphate of one nucleotide and the 5' OH of the next e) 3' OH group of one nucleotide and the 5' phosphate of the next In the somatic tissues of eukaryote organisms, each time DNA is replicated prior to cell division the chromosomes become a little shorter. Why does this happen? a) DNA polymerase is absent b) primase is absent c) telomerase is present d) telomerase is absent e) DNA ligase is absent
Bryan V.
DNA replication is bidirectional and discontinuous; explain your understanding of those concepts. a. DNA polymerase reads the template strand in the 3’ to 5’ direction and adds nucleotides only in the 5’ to 3’ direction. The leading strand is synthesized in the direction of the replication fork. Replication on the lagging strand occurs in the direction away from the replication fork in short stretches of DNA called Okazaki fragments. b. DNA polymerase reads the template strand in the 5’ to 3’ direction and adds nucleotides only in the 5’ to 3’ direction. The leading strand is synthesized in the direction of the replication fork. Replication on the lagging strand occurs in the direction away from the replication fork in short stretches of DNA called Okazaki fragments. c. DNA polymerase reads the template strand in the 3’ to 5’ direction and adds nucleotides only in the 5’ to 3’ direction. The leading strand is synthesized in the direction away from the replication fork. Replication on the lagging strand occurs in the direction of the replication fork in short stretches of DNA called Okazaki fragments. d. DNA polymerase reads the template strand in the 5’ to 3’ direction and adds nucleotides only in the 3’ to 5’ direction. The leading strand is synthesized in the direction of the replication fork. Replication on the lagging strand occurs in the direction away from the replication fork in long stretches of DNA called Okazaki fragments.
DNA ligase helicase template discontinuously leading hydrogen replication fork sister chromatids continuously DNA polymerase identical lagging covalent Okazaki fragments nontemplate Step 1: The ________ bonds between the complementary base nucleotides of the double helix molecule are broken by ________ exposing the nitrogenous bases. Step 2: The separation of the two parental strands of DNA creates a ________ and each separated strand will act as a ________ for making a new strand. Step 3: On the ________ strand, the enzyme DNA polymerase ________ adds nucleotides as it travels down the parental molecule. Step 4: On the ________ strand, the ________ makes short segments of DNA, called ________. Step 5: The fragments along the lagging strand are eventually connected together by a ________ enzyme. The end result of DNA replication are two sets of ________ DNA molecules, commonly called sister chromatids, which are separated and sent into new cells during cell division.
Marlyn J.
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