Ib Dna Replication

DNA and histones

DNA and chromatin

Chromatin and nucleotides

Mature RNA and histones

I and V

III and IV

II and III

III and V

A

B

C

D

Types of nucleotides

Types of base pairs

Types of sugars

Types of bases

Sections of RNA removed by DNA polymerase III and replaced with DNA

Nucleotides added by DNA polymerase I in the same direction as the replication fork

Short sections of DNA formed during DNA replication

Short lengths of RNA primase attached to the DNA during replication

To enable replication of the 3′ → 5′ (lagging) strand

To form the template for the RNA primers

To initiate replication on the 5′ → 3′ (leading) strand

To help the DNA helicase unwinding the DNA helix

DNA polymerase I adds nucleotides in the 5´ → 3´ direction.

RNA polymerase adds nucleotides in the 3´ → 5´ direction.

DNA polymerase III adds nucleotides in the 5´ → 3´ direction.

DNA polymerase III adds nucleotides in the 3´ → 5´ direction.

I

II

III

IV

RNA primase

DNA polymerase I

DNA helicase

DNA polymerase III

To add appropriate nucleotides in the 3′ --> 5′ direction

To remove the RNA primers and replace them with DNA

To join together the Okazaki fragments

To join together both strands of DNA to the histones