DNA replication Flashcards
How does DNA replicate?
Through semi-conservative replication
What enzyme breaks the hydrogen bonds between bases?
DNA helicase
What reaction binds the nucleotides of the new strands of DNA together?
Condensation reactions
What bonds form between the bases on the original and new strands?
Hydrogen bonds
What catalyses the condensation reaction between the nucleotides of the new strand?
DNA polymerase
How many strands of the original DNA molecule are in new DNA molecule?
One strand of original DNA (one new strand)
How is 3’ pronounced?
Three prime
How is 5’ pronounced?
Five prime
What does antiparallel mean in terms of DNA strands?
The strands run in opposite directions; the 3’ end of one strand is next to the 5’ end of another.
Which end of the DNA strand is DNA polymerase complementary to?
The 3’ end; DNA polymerase can only add new nucleotides to the 3’ end
Who provided evidence for semi-conservative replication?
Meselson and Stahl
