Notes describing DNA and its discovery in the last Century!

1. WARM-UP #1

2. DNA (Deoxyribonucleic Acid)

4. DNA Nucleotide O O=P-O O Phosphate Group N Nitrogenous base (A, G, C, or T) CH2 O C 1 C 4 C 3 C 2 5 Sugar (deoxyribose)

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

8. DNA Double Helix P P P O O O 1 2 3 4 5 5 3 3 5 P P P O O O 1 2 3 4 5 5 3 5 3 G C T A

11. BASE-PAIRINGS C G H-bonds T A

14. DNA is wrapped tightly around histones and coiled tightly to form chromosomes