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E.Q. What are the components of DNA?

p 26 10/6. Monomer = Nucleotide. E.Q. What are the components of DNA?. Phosphate. Nitrogenous Base. Sugar (deoxyribose). Polymer = Nucleic acid. DNA!!. THE BIG PICTURE. Cells. Cell Membrane. Molecule Movement. Carbs, Lipids, and Proteins. Also used as energy from food. Nucleus.

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E.Q. What are the components of DNA?

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  1. p26 10/6 Monomer = Nucleotide E.Q. What are the components of DNA? Phosphate Nitrogenous Base Sugar (deoxyribose) Polymer = Nucleic acid DNA!!

  2. THE BIG PICTURE Cells

  3. Cell Membrane

  4. Molecule Movement

  5. Carbs, Lipids, and Proteins Also used as energy from food

  6. Nucleus

  7. A lesson from Jurassic Park...

  8. How many parts to a Nucleic Acid??

  9. 1 3 2

  10. Phosphate Nitrogenous Base Sugar

  11. Half a DNA Nitrogenous Base Phosphate Sugar

  12. Full DNA Nitrogenous Bases Phosphate Phosphate

  13. “Rungs of ladder” Nitrogenous Base (A,T,G or C) “Legs of ladder” Phosphate & Sugar Backbone DNA Double Helix

  14. For Thursday: A HISTORY OF DNA • Discovery of the DNA double helix A.Rosalind Franklin- X-ray photo of DNA. (1952) B.Watson and Crick- described the DNA molecule from Franklin’s X-ray. (1953)

  15. Nitrogenous Base

  16. A or G T or C Nitrogenous Bases • PURINES 1. Adenine (A) 2. Guanine (G) • PYRIMIDINES 3. Thymine (T) 4. Cytosine (C)

  17. C T A G • Adeninemust pair with Thymine • Guanine must pair with Cytosine • Their amounts in a given DNA molecule will be about the same. The car goes in the garage! The apple grows on the tree!

  18. Apples Grow on Trees Adenine to Thymine

  19. Cars go in Garages Cytosine to Guanine

  20. 5 O 3 3 O P P 5 5 C O G 1 3 2 4 4 2 1 3 5 O P P T A 3 5 O O 5 P P 3 DNA Double Helix HYDROGEN BONDS

  21. The differently shaped bases are bonded together antiparallel to one another (5’3’) DNA ladder will twist into a double helix shape

  22. Antiparallel

  23. 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.

  24. Replicating DNA DNA Molecule #1 G T C A C T G T G C T A

  25. Replicating DNA DNA Molecule #1 G T C A C T G T G C T A C A G T G A C A C G A T

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