Chapter 10

Chapter 10 - Chapter 10 What are the structure and...

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Chapter 10 What are the structure and chemistry of nitrogeneous bases? o Know how to draw all 5 What are nucleosides? Structure and chem. Of nucleotides What are nucleic acids What are the different classes of nucleic acids Are nucleic acids susceptible to hydrolysis Information transfer in cells Information encoded in a DNA. .transcription/translation review Fig 10.1 replication, transcription, translation 10.1 What are the structure and chemistry of nitrogenous bases? Pyrimidines: cytosine, thymine, uracil Purines: adenine, guanine Fig 10.2 know Pyrimidine ring (big name, smaller molecule) and Purine Rings (smaller name, bigger structure) Fig 10.4 Properties of Pyrimidines and purines can be traced to their electron rich nature
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Aromaticity and electron-rich nature of pyrimidines and purines enable them to undergo keto-enol tautermization. o Tautomerization fig 10.6 o pH 7 keto=uracil, thymine, guanine o pH 7 Enol=cytosine, guanine o Fig 10.8 UV absorption Adenosine: a nucleoside with physiological activity o Functions as an autacoid, or local hormone, and neuromodulator o Causes blood vessel dilation…don’t have to know 10.2 What are Nucleosides? Compounds formed when a base is linked to a sugar via a
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Chapter 10 - Chapter 10 What are the structure and...

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