4.Nucleic_Acids_2011_ANGEL

4.Nucleic_Acids_2011_ANGEL - Nucleic Acids Ch. 5 pp.86-89...

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Unformatted text preview: Nucleic Acids Ch. 5 pp.86-89 “The great appeal of the genetic code derives not only from the importance of its role in the cell, but also from man’s innate fascination with certain kinds of games and puzzles – chess, logic problems, crossword puzzles, and the like. The matching of the nucleic acid “code words” to the amino acids seemed initially to present this sort of challenge to the scientist.” Carl Woese Electron microscope view of DNA released from a bacterial cell I. Nucleic acid monomers play roles in : 1 . Energy currency (e.g. ATP and GTP) 2. _regulation________ of processes (e.g. donate phosphate groups in phosphorylation) 3. Making up __polynucleotide_________ (the polymers of DNA and RNA which store, express and transmit genetic hereditary information) Nucleic acid monomer terms to know: • Nitrogenous bases Purines: e.g.adenine and guanine Pyrimidines: e.g.cytosine, thymine(DNA only ),uracil(RNA only) • _nucleoside________: base plus deoxyribose sugar (DNA) or ribose sugar(RNA ) e.g. deoxyadenosine or adenosine • _nucleotide_________:base plus sugar plus 1 to 3 phosphates e.g. adenosine triphosphate Recognize the structure of a base, nucleoside and nucleotide Note that the nucleic acid has different ends. Be able to recognize these structures as a pyrimidine (one ring) or purine (two rings) How many carbons are in these sugars?...
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This note was uploaded on 02/03/2012 for the course BS 111 taught by Professor Patterson during the Spring '05 term at Michigan State University.

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4.Nucleic_Acids_2011_ANGEL - Nucleic Acids Ch. 5 pp.86-89...

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