BIOL 151 Study Guide - Cytoplasm, Nitrogenous Base, Thymine
Document Summary
Function is to store & transmit hereditary information. 2 types: storage form: dna (deoxyribonucleic acid, transmission form: rna (ribonucleic acid) Nucleotides for dna & rna are composed of: a sugar (deoxyribose or ribose, a phosphate group, a nitrogenous base the one that changes. 4 different nitrogenous bases: adenine, thymine, guanine, and cytosine. The information in a molecule of dna is determined by its sequence of bases: Adenine always pairs with thymine, guanine always pairs with cytosine. Rna is the same, with thymine replaced by uracil (ex: cgauuacccgau) The sugar molecule in the rna backbone contains an extra oxygen. Rna has only one sugar-phosphate backbone, while dna has two. Instead of thymine, rna has a similar base called uracil. It takes instructions for production of a protein from dna, moves them to another part of the cell, and directs the building of a protein. Genetic message is genetic message transcribed from -------------- translated into.