2.2 DNA Replication

Question 1

Why do you need to replicate DNA?

Answer 1

For mitosis

Question 2

What is the dispersive DNA replication?

Answer 2

Nucleotides break into small bits and new nucleotides fill in the gaps

Question 3

What is conservative DNA replication?

Answer 3

2 new strands make up a whole new double helix and parent helix is untouched

Question 4

What is the semi conservative DNA replication?

Answer 4

Each parent strand joins one daughter strand

Question 5

What was the test to find out which DNA replication was right?

Answer 5

Grow microbes in N15 (Nitrogen 15 isotope) then grow them in N14 then spin in centrifuge, A thick line of N14 sat on top whilst a thin line of N15 sat below his showed it semi conservative and conservitive

Question 6

What are the requirements for making DNA?

Answer 6

Helicase
Polymerase
DNA template
ATP
Nucleotides
Ligase

Question 7

What does dna helicase do?

Answer 7

Break hydrogen bonds between nucleotides

Question 8

What does dna polymerase do?

Answer 8

Copy nucleotides

Question 9

What does dna ligase do?

Answer 9

Put nucleotides back together