DNA replication Flashcards
What will DNA need to do before Cellular Reproduction?
Duplicate
DNA is a Self_____-_______ _______
Self-replicating molecule
When cells go through Mitosis, how many cells will they split into?
two
Mitosis does what?
makes a identical copy of an original cell
T or F each cell must have the exact same number of chromosomes for the cell to be viable
T
What stage is DNA replicated in?
Synthesis
Where does DNA replication take place?
the Nucleus of eukaryotes
Where does the DNA replication in bacteria take place?
the Cytoplasm
Where will the DNA split at?
the nitrogenous bases
What will be added to the unzipped strands?
complimentary nucleotides
what is SEMI-CONSERVATIVE REPLICATION?
Semi-conservative replication is the process by which DNA makes a copy of itself during cell division. In this process, each of the two new DNA molecules consists of one original (parental) strand and one newly synthesized strand. This ensures that each daughter cell receives one complete set of genetic information.
Each strands contains a ________ and ___________ copy of information
complete and complimentary
What are the strands that is read to make a complimentary copy called?
template strand
3’ to 5’, leading or lagging?
leading
5’ to 3’, leading or lagging?
lagging
__________ strands are replicated continuously
leading
_________ strands are replicated in sections?
lagging
T or F, replication is NOT a chemical process
F
what does the HELICASE enzyme do?
breaks down the hydrogen bonds between the nitrogen bases
what does the TOPOISOMERASE do?
helps with the uncoiling of the double helix
what does the DNA PRIMASE do?
makes RNA primers that attach to “unzipped” DNA
what is DNA POLYMERASE?
adds nucleotides to an existing DNA strand
what direction does DNA POLYMERASE build in?
5’ to 3’
what is DNA LIGASE
essentially a primer, and joins the parental strand with the new strand of DNA
