1. Assignment # The Structure of DNA
Biology
Mrs. McCarthy
July 30, 2018

2. Prokaryotic cells lack a true nucleus
Example: bacteria
Eukaryotic cells have a nucleus surrounded by a nuclear membrane
Examples: ALL cells except bacteria

3. I. DNA stands for deoxyribonucleic acid
DNA is found in the nucleus of the cell
DNA is the genetic material in each cell
DNA controls the chemical processes and determines which proteins will be made by the cell

4. II. DNA is made up of nucleotides 5 Carbon sugar called deoxyribose
Phosphate group
One of 4 nitrogen bases
Adenine
Thymine
Cytosine
Guanine
D. Many, many nucleotides make up a single DNA molecule

5. III. DNA is in the form of a double helix
The sides of the ladder are the phosphate groups
The rung connections are the deoxyribose sugar
The rungs are the nitrogen bases
Only certain nitrogen bases can pair up with each other
Adenine pairs with thymine
Cytosine pairs with guanine

6. D. The base pairs of the rungs (A-T& C-G) are held together by hydrogen bonds that are easily broken

7. IV. Label this diagram of a strand of DNA:

8. V. Write the letters for the matching nucleotides on the strand of DNA.
Remember, Adenine always pairs with Thymine.
Cytosine always pairs with Guanine.

9. Each group of three nucleotides is called a gene
Each group of three nucleotides is called a gene. (write this on your paper)
This is Gene.

10. Listen to how the “Y” chromosome (male) has been musically expressed.
To be true to the DNA of the genetic code, the actual ATCG  base pair sequences need be maintained in DNA music.  This is by nature very restrictive.  Just as adenine, thymine, cytosine and guanine are in themselves complex molecules, the musical phrases used to portray them can also be somewhat complex. 
Listen to how the “Y” chromosome (male) has been musically expressed.

11. Listen to how the “X” chromosome (female) has been musically expressed.

12. Activity
Build a model of DNA using the pieces provided. Here is a key of the pieces:
Black pentagon pieces = deoxyribose sugar
White tubes = phosphates
Red tubes = guanine
Blue tubes = thymine
Green tubes = adenine
Black tubes = cytosine
Clear connectors = hydrogen bonds

13. Journal Entry # July 30, 2018
Sketch your DNA model in the journal section of your notebook. Draw it like a ladder. Label one phosphate, one deoxyribose, one hydrogen bond, and ALL of your nitrogen base pairs.