*Unit 6 Part 3: DNA Replication

Question 1

In DNA replication, DNA makes an ______ copy.

Answer 1

identical

Question 2

In DNA replication, DNA makes a copy of itself _____ a cell divides.

Answer 2

before

Question 3

Semi-conservative

Answer 3

New DNA molecules each contain one original and one new strand

Question 4

What does DNA rely on to make an identical copy?

Answer 4

Complementray base pairs

Question 5

What are complementary base pairs?

Answer 5

A-T and G-C

Question 6

How many steps of DNA replication are there?

Answer 6

four

Question 7

What are the steps of DNA replication?

Answer 7

1. Unwind DNA from histone proteins
2. Unzip 2 sides of DNA
3. Copy
4. Glue

Question 8

What is the first step of DNA replication?

Answer 8

Unwind DNA from histone proteins

Question 9

What is the second step of DNA replication?

Answer 9

Unzip 2 sides of DNA
- the enzyme Helicase breaks Hydrogen bonds, exposing nitrogen bases of each strand

Question 10

Explain the third step of DNA replication

Answer 10

Enzyme Polymerase adds matching nucelotides to template strands (A=T, C=G)

Question 11

Explain the fourth step of DNA replication

Answer 11

Enzyme ligase “glues” to form sugar-phosphate backbone between nucleotides and new strands

Question 12

What is the end result of DNA replication?

Answer 12

Two identical DNA molecules