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The Synthesis of Proteins
Member rating: No Rating | Words: | Submitted: Tue Jun 20 2006
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The Synthesis of Proteins DNA is a polymer made up of repeating sub-units called nucleotides. In the case of DNA, these monomers consist of a deoxyribose sugar, a phosphate group and one of four nitrogenous bases (adenine, guanine, cytosine and thymine). In living cells DNA adopts a structure known as a double-helix, which essentially resembles a twisted ladder structure. In the double helix, two polynucleotide chains combine via base-pairing between nucleotide units in the individual chains. The base pairs combine in a very specific and complimentary manner, with adenine combining only with thymine, and guanine only with cytosine. The sequence of the base pairs along the DNA molecule carries the genetic information of the cell. DNA is found in the nucleus of all eukaryotic cells and contains within its structure the entire genetic code for the organism. DNA serves two very important functions: * To transmit information from one...
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