Biology Lecture 9

Biology Lecture 9 - NucleicAcids Store,transmit, DNA RNA...

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Nucleic Acids Store, transmit, and use genetic information Polymers of nucleotides 2 types of nucleic acids
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DNA Deoxyribonucleic acid Stores genetic information Transmits genetic information
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RNA Ribonucleic acid ‘uses’ genetic information Messenger RNA (mRNA) Ribosomal RNA (rRNA) Transfer RNA (tRNA)
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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
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Nucleic Acid Structure Polymers of nucleotides Polynucleotides 3’C 5’ end 5’C 3’C 5’C 3’ end OH O O O O
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Nucleotide Structure Composed of three parts Nitrogenous base Nucleoside O O O - - O P CH 2 5’C 3’C Phosphate group Pentose sugar (b) Nucleotide O
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CH CH Uracil (in RNA) U Ribose (in RNA) Nitrogenous bases Pyrimidines C N N C O H NH 2 CH CH O C N H CH HN C O C CH 3 N HN C C H O O Cytosine C Thymine T N HC N C C N C CH N NH 2 O N HC N H H C C N
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Biology Lecture 9 - NucleicAcids Store,transmit, DNA RNA...

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