DNA Replication

Question 1

What is triplet code

Answer 1

Means dna comes in codes of 3

Question 2

Why does dna replicate

Answer 2

So each new cell has the full amount of dna

Question 3

What is semi conservative replication

Answer 3

Where half of the strands in each new dna molecule are from the original dna molecule

Question 4

Step 1

Answer 4

Dna helicase breaks the hydrogen bonds and unwinds the strands making a replication fork

Question 5

Step 2

Answer 5

The enzyme primase makes small pieces of rna called primer

Question 6

Step 3

Answer 6

DNA polymerase binds to the primer to make the new strand of dna and adds dna bases in one direction

Question 7

Step 4

Answer 7

In the lagging stand DNA polymerase can only be made in small chunks called Okazaki fragments as it is going in the opposite way

Question 8

Step 5

Answer 8

It starts with the rna primer and the DNA polymerase adds the bases in the Okazaki fragments

Question 9

Step 6

Answer 9

The enzyme exonuclease removes the rna primer and the DNA polymerase fills in the gap

Question 10

Step 7

Answer 10

Enzyme ligase fuses the two strands together

Question 11

Step 8

Answer 11

The stands are semi conservative as they each contain half new and half old dna

Question 12

What direction is dna
Made
Read

Answer 12

Made - 5’ to 3’

Read- 3’ to 5’