BiologicalMolecules160-page22

BiologicalMolecules160-page22 - RNA molecules are single...

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Biological Molecules - 22 3. Nitrogen Base component attached to the sugar's 1'carbon. There are two types of nitrogen bases: Single six-sided ring pyrimidines Cytosine Thymine Uracil Double ring purines (six- and five-sided) Adenine Guanine Arrangement of a Nucleotide: Nucleic acids (polynucleotides) are formed when S–P covalent phosphodiester linkages form long chains. In DNA, a double chain is formed when 2 nitrogen bases hydrogen bond.
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Unformatted text preview: RNA molecules are single chains. Genes (specific regions of DNA molecules) contain the hereditary information of an organism. The linear sequence of nitrogen bases of the nucleotides determines the amino acid sequence for proteins in the cells and tissues. As with all of biology, the processes of evolution are validated in DNA information. Organisms more closely related evolutionarily, have more similar DNA....
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This note was uploaded on 12/29/2011 for the course BIO 151 taught by Professor Edwards during the Spring '10 term at SUNY Stony Brook.

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