8170248506 | DNA Replication | the process by which a DNA molecule is copied; also called DNA synthesis | 0 | |
8170248516 | Antiparallel | subunits run in opposite directions | 1 | |
8170248521 | Semiconservative Model | the two strands of the parental molecule separate and each functions as a template for synthesis of a new complementary strand- most common | 2 | |
8170248524 | Replication Fork | a Y shaped region where the parental strands of DNA are being unwound | 3 | |
8170248525 | Helicases | enzymes that untwist the double helix at the replication forks, separating the two parental strands and make them available as template strands | ![]() | 4 |
8170248526 | Single Strand Binding Proteins | Bind to the unpaired DNA strands keeping them from repairing | 5 | |
8170248527 | Topoisomerase | The untwisting of double helix causes tighter twisting and strain ahead of replication fork Relieve this strain by breaking swiveling, and rejoining DNA strands | 6 | |
8170248528 | Primer | The initial nucleotide chain that is produced during DNA synthesis is actually a short stretch of RNA | 7 | |
8170248529 | Primase | Synthesizes the primer Starts a complementary RNA chain from a single RNA nucleotide, adding more RNA nucleotides one at a time, using the parental DNA strand as a template | 8 | |
8170248530 | DNA polymerase III | The main enzyme that catalyze the synthesis of a new DNA strand by adding nucleotides to a preexisting chain | 9 | |
8170248531 | Leading strand | Strand that continuously adds nucleotides to the new complementary strand as the fork progresses | 10 | |
8170248532 | Lagging Strand | The strand that DNA polymerase III builds moving away from the replication fork Synthesized discontinuosly as a series of segments | 11 | |
8170248533 | Okazaki fragments | Series of segments that are 1000-2000 nucleotides long. Made due to the discontinuous building of the lagging strand. | 12 | |
8170248534 | DNA Ligase | joins the sugar phosphate backbones of all the Okazaki fragments and replaced primers into a continuous DNA strand | 13 | |
8170248536 | DNA polymerase I | Removes RNA nucleotides of primer from 5' end and replaces them with DNA nucleotides | 14 | |
8170248544 | Chromatin | complex of DNA and protein | 15 |
AP BIology DNA Replication Flashcards
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