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DNA REPLICATION

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th4ngz's version from 2017-12-05 20:36

Section 1

Question Answer
Watson and Crickintroduce DNA helix model
DNA structurepolymer of nucleotides
Nitrogen baseT-A / C-G
DNA made up ofDeoxyribose bond by phosphate group
RNA made up ofRibose bond by phosphate group
DNA is (helix)Double helix
RNA is (helix)Single strand
Antiparallel backbone5' to 3'
memorize

Section 2

Question Answer
Origin of replicationParticular site where DNA replication begin
Origin in bacteriaOnly one
Origin in eukaryoteDetermined by primer
memorize

Section 3

Question Answer
Replication forkY-shaped region, unwound
HelicaseEnzyme untwist helix
PrimerShort chain act as origin
PrimaseSynthesize primer
DNA polymeraseMake new DNA stranding, adding 5' to 3'
Leading strandUsually the upper strand, continuous
Lagging strandUsually the lower strand, discontinuous
Okazaki fragmentLagging template, which made by polymerase
DNA ligaseGlue the fragment together
memorize