Unit 4 DNA replication phase 2

Question 1

DNA polymerase

Answer 1

enzymes that replicate and repair DNA

-DNA polymerase 3 is used on leading strand

-DNA polymerase 1 is used on lagging strand

Question 2

Primase

Answer 2

enzyme that lays out RNA primer
-a short chain of RNA nucleotides

the new strand of DNA will use the RNA primer as a layout and lay DNA nucleotides (RNA nucletides are removed and replaced)

Question 3

Leading vs lagging strand

Answer 3

Leading:
-uses 3 - 5 prime as template
-continuously synthesizes
-only needs 1 primer
-DNA polymerase 3

Lagging:
-uses 5 - 3 prime aas template
-synthesizes in fragments
-fragments = Okazaki fragments
-DNA ligase forms covalent bonds between the fragments to stablize them
-DNA polymerase 1