1. List everything you know about DNA
Bell Work 10/12
List everything you know about DNA

2. Fill out your video questions

3. Title: Dna structure E. Q
Title: Dna structure E.Q. How are the structure and function of DNA related?

4. Adenine
Thymine
Guanine
Cytosine

5. A lesson from Jurassic Park...

6. Discovery of the DNA double helix
1. Rosalind Franklin - X-ray photo of DNA.
(1952)
2. Watson and Crick - described the DNA molecule from Franklin’s X-ray.
(1953)

7. THE BIG PICTURE All living things are made up of cells
Most cells contain DNA- the genetic code which tells your body what type of proteins to make

8. In eukaryotic cell DNA is in the Nucleus

9. What are the components of DNA?
10/12
What are the components of DNA?
Monomer = Nucleotide
Phosphate
Nitrogenous Base
Sugar (deoxyribose)
Polymer = Nucleic acid
DNA!!

10. How many parts to a Nucleic Acid??

11. 1 3 2

12. Label on your picture
Phosphate
Nitrogenous Base
Sugar

13. Phosphate Nucleotide sugar Nitrogenous base Adenine Thymine Guanine
Cytosine

14. Half a DNA
Nitrogenous Base
Phosphate
Sugar

15. Full DNA What is connecting the 2 halves of DNA??? Nitrogenous Base
Nitrogenous Bases
Sugar
Phosphate
Phosphate
Sugar
What is connecting the 2 halves of DNA???

16. Nitrogenous bases are connected by hydrogen bonds (weak)

17. DNA Double Helix P O 1 2 3 4 5 P O 1 2 3 4 5
HYDROGEN BONDS G C T A

18. Adenine
Hydrogen Bond
Thymine
Guanine
Cytosine

19. In DNA There are 4 nitrogenous bases
Adendine (a), Thymine (t), guanine (g), and cytosine (c).
The order of these bases create your genetic code
Ex: ATCGCCCTAAGGCGTATCG…
You need this whole slide in your notes
The code of nucleotides is read in groups of three (triplets) called codons
Ex: ATC or GCC or CCC etc.

20. The rules of nitrogenous bases for dna
Adenine must pair with Thymine
Guanine must pair with Cytosine
Their amounts in a given DNA molecule will be about the same.
The apple grows on the tree!
The car goes in the garage! T A G C

22. DNA is in a twisted ladder structure called a Double Helix
Nitrogenous
Base (A,T,G or C)
“Rungs of ladder”
“Legs of ladder”
Phosphate &
Sugar Backbone

23. Phosphate-sugar Backbone
Adenine
Thymine
Guanine
Phosphate-sugar Backbone
Cytosine

24. BELLWORK: Write the complementary DNA Base Pairs
DNA strand G T C A

25. Complementary DNA Base Pairs
G T C A

26. Science Fact of the Day: If the entire DNA from all nuclei in the human body were to be arranged lengthwise, it would measure 1,000 times greater than the distance from the Earth to the Sun.

27. The strands always run from 5 prime (5’) to 3 prime (3’)
These DNA strands run in opposite directions of one another, we call this antiparallel
antiparallel (5’3’)
The strands always run from 5 prime (5’) to 3 prime (3’)
The 5 and 3 represent Carbon numbers

29. 3’ 5’ 5’ 3’

30. Antiparallel

31. Important to Remember: All living things have DNA
Important to Remember: All living things have DNA! Scientists refer to this as a “common genetic code” The sequence of bases matters! The order determines the organism.

32. Jot thoughts 1. Person in the yellow seat starts 2
Jot thoughts 1. Person in the yellow seat starts 2. They answer the question on the sticky note 3. they say their answer out loud 4. put the sticky note in the middle of the table. 5. pass the sticky note pad to the person on their left 6. Repeat 2-5 with a new person
Describe the structure or function of DNA
Looks like
does

33. DNA model instructions (individual)
1) make sure your parts are colored according to the code on the board
2) cut out your pieces
3) assemble a nucleotide according to the organism you choose
4) assemble the complementary base pairs
5) put your DNA molecule together

34. Sequence Choices Orange Madagascar Hissing Cockroach
Phosphate = black
Sugar = white
Orange
Madagascar Hissing Cockroach
Flesh eating microbe

35. Sequence Choices Madagascar Hissing Cockroach Flesh eating microbe
Phosphate = black
Sugar = white
Madagascar Hissing Cockroach
Flesh eating microbe

36. Analysis: How is the DNA in the organisms similar?
How is the DNA in the organisms different?
Why is DNA referred to as the “common genetic code”?
What information can scientists learn by comparing the DNA of two different organisms?
Which two organisms are most closely related?