Cell nucleus

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  • Protein Synthesis Lab Report

    between eukaryotes and prokaryotes leads to dissimilar processes of protein synthesis. The larger eukaryotes have a more intricate pathway associated with protein synthesis, due to both the biochemical structure of organelles and enzymes, and also the transport of genetic material within cell. In this essay I hope to explore the differences of gene expression between these two types of cells. A key difference between Eukaryotes and Prokaryotes is that Eukaryotes contain monocistronic mRNA molecules, meaning that the molecule will only code for cistron, and henceforth one protein. Conversely, Prokaryotic mRNA is polycistronic. This means that one mRNA molecule codes for multiple cistrons, resulting in the production of many proteins upon translation. Proteins produced from this polycistronic mRNA will likely have related function, for example each cistron may code for the subunits of the quaternary structure of a globular protein. Eukaryotes contain non coding sequences within their DNA known as introns, while these are absent in Prokaryotes. In order for translation to form the correct sequence for the corresponding polypeptide, eukaryotic mRNA introns must be spliced using a collective…

    Words: 773 - Pages: 4
  • Systemic Lupus Erythematosus Essay

    Mok & Lau (2003) explain the pathophysiology as Defective immune regulatory mechanisms, such as the clearance of apoptotic cells and immune complexes, are important contributors to the development of SLE. The loss of immune tolerance, increased antigenic load, excess T cell help, defective B cell suppression, and the shifting of T helper 1 (Th1) to Th2 immune responses leads to B cell hyperactivity and the production of pathogenic autoantibodies. Systemic lupus erythematosus (SLE) is a…

    Words: 765 - Pages: 4
  • Progeria

    the C-terminal part of exon 11, including the cleavage site of zinc metalloprotease, which is an important enzyme in processing lamin A. The incomplete process of Prelamin A, results in a mutant form of lamin A that lacks 50 amino acids in the carboxyl terminus, or C-terminal, called progerin (Burtner; Gruenbaum, 2009; Merideth et al., 2008). Progerin is a lamin A protein isoform (Rodriguez et al., 2009). The production of progerin leads to an abnormal nuclear membrane throughout the cell cycle…

    Words: 1655 - Pages: 7
  • Rna Synthesis Essay

    University of Glasgow and Dr. Pedra Hojkova in MRC Clinical Sciences Centre, Imperial College London who will provide me Hira-flox, Cabin1-flox, Ubn1-flox (molecules of Hira complex) and Zp3-Cre mouse line (oocyte-specific Cre recombinase) respectively. Both collaborators are working on H3.3 but in different context and therefore we will not compete with each other. 1.1 Characterise the phenotypes of Cabin1 and Ubn1 oocyte specific mutants I will breed each flox line to Zp3-cre mice for…

    Words: 893 - Pages: 4
  • Pax6 Eye Development

    Xie et al. (2013) demonstrated the necessity of this gene for the formation of the lens placode. To do this, the authors performed comparative chromatin immunoprecipitation (ChIP) studies in mice to determine which genes were regulated by Pax6. PAX6-specific antibodies were used for this analysis, as well as chromatin from the eye lenses of newborn mice. Chromatin from lenses, the forebrain, and pancreatic cells was analyzed to determine how many genes were controlled by Pax6 based on promoter…

    Words: 2063 - Pages: 9
  • C-Myc Synthesis

    regulation of the cell cycle. It regulates genes that promote the induction of the cell cycle and it is also involved in apoptosis. The c-myc ¬gene is one of the most commonly activated oncogenes and has been found to be overexpressed in many cancers. Activation of this oncogene may contribute to as many as 100,000 cancer deaths per year in the United States alone (Dang et al., 2006). The discovery that this gene is involved in so many cancers has sparked interest in both the scientific and…

    Words: 1456 - Pages: 6
  • Allen Developing Mouse Brain Atlas (ADA) And

    potential experiment on humans. The terminology in this study does not allow for the layman to understand it. Outside research for the use of bag-of-words technique was needed as well as other areas of the study. Ninness 's (2012) study was reliable but used a smaller subject based. Had this study been done using one dataset would have made the study more generalized. This study was easier to understand and broke down the areas a bit better than the Zeng (2015) study. There is no comparison…

    Words: 904 - Pages: 4
  • Cell Membrane: The Two Main Components Of Cells

    INTRODUCTION TO THE CELL The cell is defined as the smallest unit of life. It is originated from a Latin word cella meaning ‘small room’ a word used by Hooke (in the year 1665 while observing a cell with the microscope he built by himself) to describe the cells. The cell is considered as a living thing because it has the ability to metabolize, grow and reproduce. Before the invention of microscope, it was difficult to talk about cells as they were tiny and so not visible with the naked eyes but…

    Words: 834 - Pages: 4
  • Prokaryotic And Eukaryotic Cells Essay

    Cell membrane- A cell membrane is a fine structure that can also be referred to as a plasma membrane. Both Eukaryotic and prokaryotic cells are enclosed by a cell membrane. The functions are to keep a steady shape of the cell and to control particles moving into and out of the cell. These particles may be ions or molecules. Cell wall- Prokaryotic cells have a cell wall whereas eukaryotic cells don’t. The cell wall is what provides shape and protects the cell components. Nucleus- Nucleus is only…

    Words: 414 - Pages: 2
  • Describe The Relationship Between Plant And Animal Cells

    The nucleus is in the center of all eukaryotic cells and is a very important part. The function of the nucleus is to be the control center of the cell and contains most of the cells DNA. Chromatin and chromosomes are also contained within the nucleus. The nucleolus is a small, dense region that is located at the center of the nucleus. The nucleolus' function is to make ribosomes, "the beginning". The nuclear envelope is made up of two membranes, which surround the nucleus. The nuclear envelope…

    Words: 596 - Pages: 3
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