BB lecture 9-19-08 nucleic acids

BB lecture 9-19-08 nucleic acids - Chapter 5 (pp. 86-91)...

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Unformatted text preview: Chapter 5 (pp. 86-91) continued: For Nucleic acids.. Learning objectives: Know the elemental composition of nucleic acids (whats unique?) Distinguish between: a. ribose and deoxyribose b. nucleotide and nucleoside c. pyrimidines and purines Remember that polynucleotides are polymers of nucleotides. Be able to describe the structures/functions of DNA and RNA Know where the molecules are held together by covalent bonds and hydrogen bonding Describe the 5 to 3 polarity of a nucleic acid polymer Understand what is meant by such terms as alpha helix, antiparallel, nitrogenous base, phosphodiester linkage, paired bases, complimentary strands Nucleic Acids Composed of elements: C, H, O, N, & P Monomer subunits: Nucleotides Polymers - Two major kinds: Deoxyribonucleic acid ( DNA ) Ribonucleic acid ( RNA ) Functions * : Storage of genetic information Protein synthesis * [Additional roles of related nucleosides/nucleotides include energy transfers (ATP/ADP), signal transduction (cAMP), & metabolic co-enzymes (NAD/FAD)] Nucleic acids Are polynucleotides made of monomers called nucleo tides Nitrogenous base Nucleo side O O O-- O P CH 2 5C 3C Phosphate group Pentose sugar (b ) Nucleo tide Figure 5.26 O...
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BB lecture 9-19-08 nucleic acids - Chapter 5 (pp. 86-91)...

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