Lecture 3

Lecture 3 - Lecture 3: Structure of Nucleic Acids...

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Lecture 3: Structure of Nucleic Acids Introduction to Basic Molecular Mechanisms Nucleic acids: macromolecules that 1. contain information for determining A.A. sequence (structure and function of all proteins in the cell) 2. are part of cellular structures that select & align amino acids in correct order as a polypeptide chain is being synthesized 3. catalyze a number of fundamental chem. rxns of cells (including the formation of peptide bonds between amino acids during protein synthesis deoxyribonucleic acid (DNA) contains all info needed to build cells and tissues of an organism information stored in DNA is arranged in hereditary units, genes , that control identifiable traits of an organism transcription is the process where the info stored in DNA is copied into ribonucleic acid (RNA) RNA has THREE distinct roles in protein synthesis mRNA (messenger RNA) carries instructions from DNA that specify the correct order of A.A during protein synthesis assembly of A.A into proteins occurs by
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Lecture 3 - Lecture 3: Structure of Nucleic Acids...

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