Compare And Contrast Prokaryotes And Eukaryotes Essay.
Compare and contrast, with the aid of diagrams and electron micrographs, the structure of prokaryotic cells and eukaryotic cells; Prokaryotic cells have circular DNA and are very small whilst eukaryotic cells have linear DNA and are much larger. They also have no nucleus and eukaryotes have a nucleus.
Prokaryotes consist of cells that are spherical, rod-shaped, spiral-shaped and comma-shaped. Prokaryotes inhabit nearly everywhere on Earth including some extreme environments where Prokarya and.
Read this article to learn about the process of transcription in prokaryotes and eukaryotes cells. Introduction: Transcription is a process in which ribonucleic acid (RNA) is synthesized from DNA. The word gene refers to the functional unit of the DNA that can be transcribed. Thus, the genetic information stored in DNA is expressed through RNA.
However, prokaryotes differ from eukaryotic cells in several ways. A prokaryote is a simple, single-celled (unicellular) organism that lacks an organized nucleus or any other membrane-bound organelle. We will shortly come to see that this is significantly different in eukaryotes. Prokaryotic DNA is found in a central part of the cell: the nucleoid.
Differences between prokaryote and eukaryote cells Essay Sample. The cell is the basic functioning unit of organisms in which chemical reactions take place. These reactions involve an energy release needed to support life and build structures. The cell consists of membrane bound organelles, which are responsible for the division of labour.
Prokaryotes only carry three promoter elements, -10, -35, and the UP elements, whereas eukaryotes carry a wide variety of promoter elements. In addition, the use of enhancers in eukaryotic transcription allows the promoter sites in remote location on the DNA to initiate transcription.
Eukaryotes will also have other membrane-bound structures that you will not see in prokaryotes. For example, you will tend to see a mitochondria, mitochondria, in a eukaryotic cell, both plant and animal cells, but you won't see it in a prokaryotic cell.