DNA replication Flashcards
Semiconservative replication
That each daughter strand will contain one old or conserved strand.
Topoisomerase
Prevents tangling - is an enzyme
Helicase
Unwind the double helix
Single strand Binding proteins
Bind and stabilize single-stranded DNA
DNA polymerase
add nucleotides to the 3’ end
“5’ to 3’ is the way for me”
Primase
Starts the RNA from the beginning makes the primer
What starts the chain for DNA polymerase
Primase
Leading strand
Goes to the replication fork
Lagging strand
Synthesized in a series of fragments
Ligase
Joins or glues the fragments of the lagging strand together
DNA polymerase (proofreading & repairing)
Replacing any incorrect nucleotides
(fills in blank areas)
Nuclease - Proofreading & Repairing DNA
cuts out the messed-up portion
Telomeres
A special nucleotide sequence at the end of the eukaryotic chromosomes (postpones the aging of genes)
Telomerase
Activity in cancer cells, which allow cancer cells to persist
Prokaryotic cell structure
Small amount of protein
circular DNA molecule
Nucleoid region