Session 4-DNA structure

Question 1

How wide is the space between the DNA base pairs?

Answer 1

0.34nm

Question 2

what phase of DNA replication is chromatin present?

Answer 2

interphase

Question 3

what enzyme catalyses DNA replication?

Answer 3

DNA polymerase

Question 4

how many DNA molecules are on one chromosome?

Answer 4

2

Question 5

what are the 3 processes of DNA replication?

Answer 5

Initiation, elongation and termination

Question 6

what enzyme unravels the DNA double helix?

Answer 6

DNA helicase

Question 7

How many base pairs make one complete turn of the DNA double helix?

Answer 7

10

Question 8

what is another name for the lagging strand?

Answer 8

okazaki fragments

Question 9

what enzyme joins the okazaki fragments together?

Answer 9

DNA ligase

Question 10

what is the role of the helicase enzyme?

Answer 10

uses ATP to unwind DNA helix and around replication fork, reforms the DNA helix