BIOL3149 Study Guide - Quiz Guide: Uracil, Thymine, Guanine
Document Summary
They contain the elements carbon, hydrogen, oxygen, nitrogen and phosphorus: n chop. Dna contains genes and the genetic code. Rna converts genetic code into proteins and other gene products. Adenine, guanine, thymine, cytosine and uracil: thymine is found in dna, but not rna, uracil is found in rna, but not dna. Nitrogenous bases make up nucleotides, which join together via covalent bonds between their sugar and phosphate groups to form long polymers. Adenine always bonds with thymine, and guanine always bonds with cytosine: these are known as the base pairs, the bonding forces makes the polymer assume the double helix shape. Adenine and guanine are purines, which are double ring structures. Thymine, cytosine and uracil are pyrimidines, which are single ring structures. A gene is a segment of a dna molecule or chromosome containing the instructions to make a gene product. The genetic code contains the four nitrogenous bases that are found in dna: adenine, guanine, cytosine and thymine.
