DNA Replication

Question 1

What are the three steps of DNA Replication?

Answer 1

Unzip, Zip-Up, and Rewind

Question 2

What is the Unzip step?

Answer 2

It’s when an enzyme splits the DNA down the middle

Question 3

What is the enzyme used in the Unzip step?

Answer 3

DNA Helicase –> it breaks hydrogen bonds and unwinds the double-helix

Question 4

What is the Zip-Up step?

Answer 4

Adds new nucleotides to each side of the original DNA strand

Question 5

What is the enzyme used in the Zip-Up step?

Answer 5

DNA Polymerase: adds new nucleotides one at a time to both open sides

Question 6

What is the Rewind step?

Answer 6

2 new molecules twist back into 2 new double-helixes using the previously separated helix.

Question 7

What is the Mitotic Cell Division?

Answer 7

The replication of chromosomes from the parent cell to the two offspring cells

Question 8

Why does DNA have to be replicated?

Answer 8

So that there are two of each chromosomes from the parent cell to the offspring cells.

Question 9

What is the phase called for when the DNA replication is occurring?

Answer 9

The S-Phase or Synthesis phase

Question 10

What is the nitrogenous base rule?

Answer 10

In DNA adenine always bonds with thymine and cytosine always bonds with guanine

Question 11

What are all of the nitrogenous bases?

Answer 11

A, T, C, and G