1. DNA
Structure and Replication

3. DNA: Deoxyribonucleic Acid
Purines Pyrimidines
Building block is a nucleotide

4. Types of Nucleic Acids

5. Sides: sugar-phosphate backbone
Rungs: nitrogen bases
A =T
G =C
Strands antiparallel

6. DNA Replication
1. DNA UNWINDS AND UNZIPS

7. 2. Free floating nucleotides pair up with complementary strand

8. 3. Complementary new nucleotides join up to form new complementary strand

9. RNA

10. DNA the code for life DNA contains the code to make protein.
DNA is in the nucleus while protein synthesis occurs in ribosomes.
DNA copies to form RNA (transcription) which then goes to the ribosome and tells the ribosome which amino acids to put together to make protein (translation)

11. Synthesis of Protein DNA never leaves the nucleus Process:
1. Transcription
What’s the difference?

12. Synthesis of Protein cont’d
2. Translation
End result: protein

13. Big Picture
Replication
DNA
DNA
Protein
Synthesis
mRNA
protein

15. aa aa aa
Primary protein structure aa aa aa aa