AP Notes, Outlines, Study Guides, Vocabulary, Practice Exams and more!

AP BIology DNA Replication Flashcards

Terms : Hide Images
8170248506DNA Replicationthe process by which a DNA molecule is copied; also called DNA synthesis0
8170248516Antiparallelsubunits run in opposite directions1
8170248521Semiconservative Modelthe two strands of the parental molecule separate and each functions as a template for synthesis of a new complementary strand- most common2
8170248524Replication Forka Y shaped region where the parental strands of DNA are being unwound3
8170248525Helicasesenzymes that untwist the double helix at the replication forks, separating the two parental strands and make them available as template strands4
8170248526Single Strand Binding ProteinsBind to the unpaired DNA strands keeping them from repairing5
8170248527TopoisomeraseThe untwisting of double helix causes tighter twisting and strain ahead of replication fork Relieve this strain by breaking swiveling, and rejoining DNA strands6
8170248528PrimerThe initial nucleotide chain that is produced during DNA synthesis is actually a short stretch of RNA7
8170248529PrimaseSynthesizes 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 template8
8170248530DNA polymerase IIIThe main enzyme that catalyze the synthesis of a new DNA strand by adding nucleotides to a preexisting chain9
8170248531Leading strandStrand that continuously adds nucleotides to the new complementary strand as the fork progresses10
8170248532Lagging StrandThe strand that DNA polymerase III builds moving away from the replication fork Synthesized discontinuosly as a series of segments11
8170248533Okazaki fragmentsSeries of segments that are 1000-2000 nucleotides long. Made due to the discontinuous building of the lagging strand.12
8170248534DNA Ligasejoins the sugar phosphate backbones of all the Okazaki fragments and replaced primers into a continuous DNA strand13
8170248536DNA polymerase IRemoves RNA nucleotides of primer from 5' end and replaces them with DNA nucleotides14
8170248544Chromatincomplex of DNA and protein15

Need Help?

We hope your visit has been a productive one. If you're having any problems, or would like to give some feedback, we'd love to hear from you.

For general help, questions, and suggestions, try our dedicated support forums.

If you need to contact the Course-Notes.Org web experience team, please use our contact form.

Need Notes?

While we strive to provide the most comprehensive notes for as many high school textbooks as possible, there are certainly going to be some that we miss. Drop us a note and let us know which textbooks you need. Be sure to include which edition of the textbook you are using! If we see enough demand, we'll do whatever we can to get those notes up on the site for you!