The document provides instructions and notes on DNA structure. It explains that DNA has a double helix structure and is made up of a phosphate and sugar backbone with nitrogenous bases of adenine, guanine, cytosine and thymine in the center. It notes that adenine bonds with thymine and guanine bonds with cytosine. The document instructs the reader to make a cover for their interactive notes on the DNA unit and include a color picture.

1. • Make a cover for your Interactive Notes for
the DNA unit
• Include a color picture
• Need 5 pages of binder paper

2. Notes: DNA Structure (pg 2)

3. Notes: DNA Structure (pg 2)
• DNA = Deoxyribonucleic Acid

4. Notes: DNA Structure (pg 2)
• DNA = Deoxyribonucleic Acid
• Found in the nucleus

5. Notes: DNA Structure (pg 2)
• DNA = Deoxyribonucleic Acid
• Found in the nucleus
• DNA provides the instructions for building an
organism

6. DNA structure
• Structure = Double helix (twisted ladder)

7. DNA structure
• Structure = Double helix (twisted ladder)
• Discovered by James Watson and Francis Crick
in 1953 (using data from Rosalind Franklin)

8. Chemical makeup
• “Backbone” made of phosphate and sugar

9. Chemical makeup
• “Backbone” made of phosphate and sugar
• Nitrogenous bases in the center: Adenine,
Guanine, Cytosine, and Thymine

10. Chemical makeup
• “Backbone” made of phosphate and sugar
• Nitrogenous bases in the center: Adenine,
Guanine, Cytosine, and Thymine
• A and G are purines (2 rings) and C and T are
pyrimidines (1 ring)

11. Chemical makeup
• “Backbone” made of phosphate and sugar
• Nitrogenous bases in the center: Adenine,
Guanine, Cytosine, and Thymine
• A and G are purines (2 rings) and C and T are
pyrimidines (1 ring)
• A always bonds with T and G always bonds
with C

12. Draw a picture of DNA (pg 2)