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| 6222654260 | DNA Replication | the process by which a DNA molecule is copied; also called DNA synthesis | 0 | |
| 6222654261 | Double helix | two strands | 1 | |
| 6222654262 | Antiparallel | subunits run in opposite directions | 2 | |
| 6222654263 | Nitrogenous bases of Dna | A, T, C, G | 3 | |
| 6222654264 | Purines | A and G Nitrogenous bases with two organic rings | 4 | |
| 6222654265 | Pyrimidines | C and T Nitrogenous base with a single organic ring | 5 | |
| 6222654266 | 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 | 6 | |
| 6222654267 | Origins of Replication | short stretches of DNA having a specific sequence of nucleotides | 7 | |
| 6222654268 | Replication Fork | a Y shaped region where the parental strands of DNA are being unwound | 8 | |
| 6222654269 | Helicases | enzymes that untwist the double helix at the replication forks, separating the two parental strands and make them available as template strands |  | 9 |
| 6222654270 | Single Strand Binding Proteins | Bind to the unpaired DNA strands keeping them from repairing | 10 | |
| 6222654271 | 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 | 11 | |
| 6222654272 | 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 | 12 | |
| 6222654273 | DNA polymerases | Enzyme that catalyze the synthesis of new DNA by adding nucleotides to a preexisting chain | 13 | |
| 6222654274 | Leading strand | Strand that continuously adds nucleotides to the new complementary strand as the fork progresses DNA pol III | 14 | |
| 6222654275 | Lagging Strand | The strand that DNA pol III works away from the replication fork Synthesized discontinuosly as a series of segments | 15 | |
| 6222654276 | Okazaki fragments | Series of segments that are 1000-2000 nucleotides long | 16 | |
| 6222654277 | DNA Ligase | joins the sugar phosphate backbones of all the Okazaki fragments into a continuous DNA strand | 17 | |
| 6222654278 | DNA pol III | Synthesizes new DNA strands by adding nucleotides to an RNA primer or a pre-existing DNA strand | 18 | |
| 6222654279 | DNA pol I | Removes RNA nucleotides of primer from 5' end and replaces them with DNA nucleotides | 19 | |
| 6222654280 | Nuclease | DNA cutting enzyme that cuts out the damaged parts of the strand and fills the space with nucleotides using the undamaged strand as a template | 20 | |
| 6222654281 | Telomeres | Special nucleotide sequences at the ends of chromosomes TTAGGG is repeated between 100-1000 times Prevent the staggered ends of daughter molecule from activitating cell's system for monitoring DNA damage | 21 | |
| 6222654282 | Histones | Proteins that are responsible for the first level of DNA packing in chromatin |  | 22 |
| 6222654283 | Chromatin | complex of DNA and protein | 23 |
