8.2 replication of dna

Question 1

Leading Strand

Answer 1

The strand of DNA that heads towards the replication fork.

Question 2

Lagging Strand

Answer 2

The strand of DNA that strays away from the replication fork.

Question 3

Semi-Discontinous

Answer 3

short fragments of DNA are joined together subsequently by the DNA ligase to produce an uninterrupted DNA strand.

Question 4

Semiconservative replication

Answer 4

Two strands of DNA spilt, allowing them to create new strands that will keep splitting.

Question 5

Helicase

Answer 5

Rips apart DNA strands

Question 6

Primase

Answer 6

Adds an RNA primer

Question 7

DNA Polymerase III

Answer 7

DNA nucleotides are addded

Question 8

DNA Polymerase I

Answer 8

RNA primer is removed, and replaced with DNA.

Question 9

Lipase

Answer 9

Okaskai Fragments fused together.

Question 10

Order of events in DNA replication:

Answer 10

1. Helicase
2. Primase
3. DNA Polymerase III
4. DNA Polymerase I
5. Lipase

Question 11

Explain Meselson and Stahl’s experimental setup and what was concluded from the results.

Answer 11

They found that DNA follows a semiconservative model- DNA will have a parental strand and a new strand ALWAYS.