Session 4-DNA structure Flashcards
1
Q
How wide is the space between the DNA base pairs?
A
0.34nm
2
Q
what phase of DNA replication is chromatin present?
A
interphase
3
Q
what enzyme catalyses DNA replication?
A
DNA polymerase
4
Q
how many DNA molecules are on one chromosome?
A
2
5
Q
what are the 3 processes of DNA replication?
A
Initiation, elongation and termination
6
Q
what enzyme unravels the DNA double helix?
A
DNA helicase
7
Q
How many base pairs make one complete turn of the DNA double helix?
A
10
8
Q
what is another name for the lagging strand?
A
okazaki fragments
9
Q
what enzyme joins the okazaki fragments together?
A
DNA ligase
10
Q
what is the role of the helicase enzyme?
A
uses ATP to unwind DNA helix and around replication fork, reforms the DNA helix
