09-25-06 (9) Nucleic Acids

09-25-06 (9) Nucleic Acids - Nucleic Acids September 25,...

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Nucleic Acids September 25, 2006
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Nucleic Acids Store and transmit hereditary information Genes are units of inheritance. Genes have a specific sequence of nucleotides. The sequence is where the information comes from for the sequence of amino acids [in a protein?]. Each gene has the information for ONE protein Sequence of nucleotides in a gene determines primary structure of a protein
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Information Flow 1 2 3 Synthesis of mRNA in the nucleus Movement of mRNA into cytoplasm via nuclear pore Synthesis of protein NUCLEUS CYTOPLASM DNA mRNA Ribosome Amino acids Polypeptide mRNA mRNA = messenger RNA
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Two Types of Nucleic Acids Deoxyribonucleic acid (DNA) The structure of DNA contains the information that programs the cell Function is to just hold DNA and pass it on Ribonucleic acid (RNA) mRNA : messenger RNA (from DNA to ribosome) rRNA : ribosomal RNA (what makes up the ribosome) tRNA : transfer RNA (transfers amino acids; also known as the “interpreter”)
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Nucleic Acid Structure Nucleic acids are polymers Polynucleotides composed of nucleotide monomers 3’C 5’ end 5’C 3’C 5’C 3’ end OH O O O O
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09-25-06 (9) Nucleic Acids - Nucleic Acids September 25,...

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