Archaea And Bacteria Domains

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Within the study of microorganisms, two types of cells are observed; eukaryotic cell and the prokaryotic cell. Each of these cell play a different role based on its distinction; in fact, their distinction is the most important distinction among organisms. Carl Woese in the Introduction to the Archaea UCMP website provided research which would divide prokaryotes into the following two groups: archaea and bacteria. Thus, the development of the three domains was created to include archaea, bacteria, and eukaryotic domains. During the course of this Session Long Project I will define the general characteristics which determine whether a prokaryote belongs to the Archaea or Bacteria domain. I will define and discuss the role in which DNA and …show more content…
Each cell expresses the genetic information necessary for it to carry out the molecular processes, as well as whole physiological processes that enable a cell to multiply and to develop its function. In bacteria, one of the fundamental objectives of gene expression is cell adaptation to the environment in which it is located, to make possible the survival and multiplication. In the expression of a gene there are two key steps: transcription and translation of the genetic message. The first is synthesis by an RNA polymerase of a messenger RNA which is complementary to one strand of DNA encoding the gene. Most expression of bacterial genes is regulated at this stage by various molecular mechanisms. In the second step, the RNA is bound to ribosome’s participation aminoacyl-tRNA and a series of proteins, genetic message based on a nucleotide sequence (mRNA) to one based on a sequence code is translated of amino acids also known as protein. In bacteria, this process is also regulated. A particular fact prokaryotes (bacteria and archaea) is that both transcription and translation of the genetic message are performed in the same cell compartment and occur consecutively. This creates the conditions in which these processes can be coordinated through different mechanisms specific to those of eukaryotic

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