4.2 DNA Replication

Question 1

Name the order in the process the enzymes are used in DNA replication.

Answer 1

1) Helicase, 2) Primase, 3) DNA Polymerase III, 4) DNA Polymerase I, 5) Ligase

Question 2

What is the difference between DNA Polymerase III and I?

Answer 2

III- main builder, 1000 bases/s
I- editing, repair, primer, 20 bases/s

Question 3

On the leading strand, DNA polymerase is moving ____ the replication fork, and so can copy ______

Answer 3

Towards, continuously

Question 4

On the lagging strand, DNA Polymerase is moving _____ from the replication fork, meaning copying is ______

Answer 4

Away, discontinuous

Question 5

What are okazaki fragments pieces of?

Answer 5

Lagging strand

Question 6

What do nucleotides pair to?

Answer 6

A=T, G=C

Question 7

What does the arrow symbolize?

Answer 7

Parallelism

Question 8

What bonds do helicase break and why?

Answer 8

Hydrogen bonds, they are weak

Question 9

In RNA what does Adenine pair with

Answer 9

Uracil

Question 10

Why do multiple replication bubbles form during DNA replication

Answer 10

It would take too long so the process must start in multiple places.