1. Do now activity #1 What is the monomer of DNA?
What is the function of DNA?
Where is DNA stored?
What stage of interphase is DNA replicated?
Why must DNA be replicated before mitosis?
Why is it important to check the cell before mitosis? What stage of interphase is that?

2. Section 3-1: DNA Structure
Essential Question
Describe the monomer of DNA.
(HINT: what is it called?)
(HINT: what is it made up of?)
(HINT: what types of sugar or bases does it use?)
Section 3-1: DNA Structure
Learning Targets
Explain how the structure of DNA determines the structure of proteins.

3. Write down slides that have a pencil!

4. Don’t forget to chunk your notes!

5. DNA is a set of instructions.
overview
cyclins
DNA is a set of instructions.

6. Some people think of DNA as map of directions.
overview
cyclins
Some people think of DNA as map of directions.

7. And others think DNA is like a recipe.
overview
cyclins
And others think DNA is like a recipe.

8. Function of DNA: Stores genetic __________ .
overview
cyclins
information
Function of DNA: Stores genetic __________ .

9. Don’t forget to chunk your notes!

10. DNA Structure: Double helix made of nucleotides.
cyclins

11. Each nucleotide is made of 3 parts.
DNA Structure
Each nucleotide is made of 3 parts.
cyclins

12. DNA Structure
1. Deoxyribose
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13. DNA Structure
1. Deoxyribose 2. Phosphate
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14. DNA Structure
Deoxyribose
Phosphate
3. Base
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15. What are all the parts of a nucleotide?
Question #1
What are all the parts of a nucleotide?

16. Question #1: answer
Deoxyribose
Phosphate
3. Base
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17. Don’t forget to chunk your notes!

18. Base pairs
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19. Base pairs Purines Pyrimidines Adenine Thymine Guanine Cytosine
hydrogen bonds
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20. Purines attach to pyrimidines
Base pairs
Purines attach to pyrimidines
cyclins

21. Adenine attaches to ______ .
Base pairs
Adenine attaches to ______ .
Thymine
cyclins

22. Base pairs
________
attaches to Cytosine .
Guanine
cyclins

23. According to the picture, which part of the monomer can change?
Question #2
According to the picture, which part of the monomer can change? A C B

25. Don’t forget to chunk your notes!

26. Double helix
DNA is double stranded.
cyclins

27. The DNA strands are anti-parallel
Double helix
The DNA strands are anti-parallel
cyclins