1. Chapter 12 Nucleic Acids and Protein Synthesis
Section 12.2
DNA
DNA is dynamite!

2. I. The Structure of DNA DNA = Deoxyribonucleic Acid
Contains all information to make genetic code

3. I. The Structure of DNA DNA is composed of nucleotides
Nucleotides are composed of 3 structures:
Deoxyribose:
Phosphate grp:
Nitrogen base:

4. DNA Components

5. I. The Structure of DNA 4 types of Nitrogen bases: Adenine: A
Guanine: G
Cytosine: C
Thymine: T

6. I. The Structure of DNA Adenine & Guanine = _______________
Cytosine & Thymine = _______________

7. II) The Double Helix DNA is in shape of __________
Double Helix: 2 nucleotide chains __________________
Nucleotides are connected using covalent bonds
Nitrogen bases are connected by hydrogen bonds

8. II) The Double Helix
___ purine will always be connected to _____ pyrimidine

10. III) Complementary Base Pairing
Comp. Base Pairs: Nitrogen bases that pair together to connect the nucleotides of DNA
Adenine : ____________
Guanine :
Base Pairing rules:

11. DNA

12. Replication of DNA

13. IV. Replication of DNA
Process of copying DNA to create more DNA

14. IV. Replication of DNA Replication Steps
Nucleotide chains separate at Nitrogen base by _____________
Each chain will act as _________ (pattern) to copy new nucleotide
Replication fork: location of nitrogen base separation

15. IV. Replication of DNA
Helicases: __________ that will move along DNA strand to break _______ between the Nitrogen bases
DNA Polymerases: _______ that will bind the new nucleotide to the ________
_____ new strands of DNA are created

17. IV. Replication of DNA
DNA replication will occur in several different place and the same time

18. V. Accuracy and Repair
Mutation: miss match of complementary base pairs
Mutations can be corrected by _____________________________