Week 1: Nucleic Acids
Week 1: Nucleic Acids Bio 107
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This 2 page Class Notes was uploaded by Rachel Johnson on Monday September 14, 2015. The Class Notes belongs to Bio 107 at Washington State University taught by William Davis in Summer 2015. Since its upload, it has received 72 views. For similar materials see Biology in Biology at Washington State University.
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Date Created: 09/14/15
Nucleic Acids DNA and RNA M deoxyribonucleic acid 339 Characteristics Double stranded helix Consists of two sugar phosphate backbones and nitrogenous bases Two strands run antiparallel opposite direction from each other Tl Contains genetic material for the cell M ribonucleic acid 339 Characteristics Single stranded Consists of a sugar phosphate backbone and nitrogenous bases Codes for proteins Discovery of DNA Structure 339 Reported in 1953 by Watson and Crick DNA was already recognized as genetic material at this time 339 The two scientists won the Nobel Prize in 1962 Shared the prize with Wilkens 339 Watson and Crick Model Right handed double helix meaning the strands twisted to the left Sugar phosphate backbone on the outside and the nitrogenous bases on the inside Bases on opposite strands pair together 10 base pairs per turn NUCICOtide Strucwre Cytosine pairs with Guanine z Nitrogenous Base forms 3 hydrogen bonds Pyrimidines In DNA T hymine pairs with Adenine forms 2 hydrogen Cytosine bonds Thymine DNA In RNA Uracil pairs with Uracil RNA Adenine Purines Guanine Adenine The nitrogenous bases in RNA are the same as in DNA with the exception of Thymine which is replaced with Uracil 339 Phosphate Group 0 v Sugar DNA deoxyribose RNA ribose Chargafi s Rule 339 The amount of each base present is not equal however Adenine Thymine Uracil Guanine Cytosine 339 That discovery lead to knowledge that Adenine pairs with Thymine and Guanine pairs with Cytosine 339 Can calculate the amount of the other three bases if one is known
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