1. DNA Structure

2. What is DNA: nucleotides DNA is a type of Nucleic Acid.
Nucleic acids are long chains of __________________.
nucleotides

3. What is DNA:
nucleotide
Labeled drawing of a ______________:

4. What is DNA: Deoxyribonucleic acid nucleus store and transmit
DNA is found in the ____________ of the cell. Its function is to _____________________
____________________.
nucleus
store and transmit
genetic information

5. Structure of DNA: James Watson Francis Crick 1953
Scientists _________________ and ________________ are credited with discovering the structure of DNA in _______.
Francis Crick
1953

6. Structure of DNA: Rosalind Franklin x-ray crystallography 37
However: _________________ played a role in helping them discover DNA’s structure. She used ________________________ to take pictures of DNA. Then she collaborated with Watson and Crick. Unfortunately she died at age _____ before any recognition was given to her.
x-ray crystallography 37

7. Structure of DNA: 2 double helix center twisted ladder nitrogen bases
DNA is a molecule made of ____ strands which wind around each other in the shape of a ______________. The nitrogen bases point toward the ___________ of the molecule. In other words a molecule of DNA looks like a _____________________ with steps made of ________________.
double helix
center
twisted ladder
nitrogen bases

8. Structure of DNA: Adenine Guanine Cytosine Thymine
The four different nitrogen bases in DNA are: ____________(A), _____________(G), ____________(C), _____________(T).
Adenine
Guanine
Cytosine
Thymine

9. Structure of DNA: A T C G complimentary bases
____ always pairs with ____, and
____ always pairs with ____.
The bases that pair with each other are called _____________________. C G
complimentary bases

10. Structure of DNA: Categories Purines Pyrimidines Examples: Drawing:
Nitrogen Bases can be separated into two different categories:
Categories
Purines
Pyrimidines
Examples:
Drawing:
Guanine
Thymine
Adenine
Cytosine

11. Structure of DNA: thousands protein gene
A single DNA molecule may contain ____________ of nucleotides (AKA: bases)
The order of the nucleotides (bases) in a DNA is a code that provides instructions for making ____________. A segment of DNA that codes for a specific protein is called a ______.
thousands
protein
gene

12. Structure of DNA: A segment of DNA that codes for a specific protein
What is a gene: ______________________
_________________________.
A segment of DNA that
codes for a specific protein

13. What do proteins do?
Make up all your traits – hair type and color (keratin), what color your skin is (melanin), what enzymes you have to break down food (lactase, peroxidase, amylase), how strong you are (actin/myosin)

14. Structure of DNA: Label the following:
Base Pairs – Adenine, Guanine, Cytosine, Thymine
1 Nucleotide
Backbone made of sugar