Chapter 12 - DNA: The Carrier of Genetic Information Flashcards
1
Q
Helicase
A
opens the double helix at replication forks by disrupting the hydrogen bonds that hold the two strands together
2
Q
single-strand binding protein (SSB)
A
binds to single strands of DNA and prevents the helix from re-forming before it can be used as a template for repliation
3
Q
topoisomerase
A
breaks one or both DNA strand, preventing excessive coiling during replication, and then rejoins them in a more relaxed configuration
4
Q
DNA polymerase
A
links nucleotide subunits to form a new DNA stand from a DNA template
5
Q
DNA primase
A
synthesizes short RNA primers on the lagging stand, begins replication of the leading strand
6
Q
DNA ligase
A
links okazaki fragments by joing the 3’ end of the new DNA fragment to the 5’ end of the adjoining DNA
