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¶ … CELL & ITS COMPONENTS
Biology
Biologists, researchers, and professionals of many disciplines study the nature of the cell. The drive to understand the nature of the cell aligns with urges to understand the nature of the atom, the molecule, DNA and other entities of astronomically small size. In many instances, studying the extremely small provides profound insight and clarification on how bodies of much larger sizes including societies and galaxies work in analogous manners. Barabasi and Oltvai explain how the study of biology, specifically the cell, informs other fields and what the proportionate influence upon cellular biology is:
Help along the way is provided by the rapidly developing theory of complex networks that, in the past few years, has made advances towards uncovering the organizing principles that govern the formation and evolution of various complex technological and social networks. This research is already making an impact on cell biology. It has led to the realization that the architectural features of molecular interaction networks within a cell are shared to a large degree by other complex systems, such as the Internet, computer chips and society. (2004,-Page 101)
Therefore, we study the cell and its components to understand the cell itself...
The cell is the smallest living organism that is classified as living. The two types of cells are prokaryotes and eukaryote. Prokaryote cells are smaller than eukaryotes and they lack a nucleus, an organelle within a cell that contains the majority of the cell's genetic information/material. Within the nucleus is the nucleolus, which has a spherical shape and further contains RNA for the manufacture of proteins the cell will need later. Organelles come in varieties, yet they all are similar in that they are subunits within a cell with very specific functions such as mitochondria and plastids. Eukaryotes are structurally more complicated with numerous kinds of organelles that could possibly be present. Organelles, like the word they resemble, organ, assist the cell to function properly and its best. Some examples of cytoplasm include chloroplasts, which are usually found in plants, are green, and are integral to the process of photosynthesis. Another example of a cytoplasm is mitochondria, as aforementioned, which are the second largest type of organelle found within…
References:
Barabasi, A-L., & Oltvai, Z.N. (2004) Network Biology: Understanding the Cell's Functional Organization. Nature Reviews -- Genetics, 5, 101 -- 114.
Hartwell, L.H., Hopfield, J.J., Leibler, S., & Murray, A.W. (1999) From molecular to modular cell biology. Nature, 402, C47 -- C52.
Cell Junctions - Tight Junctions and Adherens Junctions There are a number of specialized junctional complexes in epithelial cells, formed by molecules that are different from CAMs and SAMs. These comprise of tight junctions, gap junctions, adherens junctions, and desmosomes; gap junctions can in addition form stuck between cell aggregates in condensing mesenchyme. All of these are well-formed and sometimes elaborate supramolecular structures carrying out various functions, ranging from electrical and
Also, there will be an availability of high quality audio and video that will render mobile phone a portable entertainment centre (Team Digit 2006). An operating system (OS) is the computer program which translates user input into instructions for the hardware components of a computer or other www.mahalo.comtechnological device. An OS provides a graphical interface through which a user can manage file systems, maintain hardware and install additional programs. At
Cell Phones for Outside Salesman Proposal Letter Dear Sir: The objective of this letter is to propose that our pharmaceutical sales team be brought into the twenty first century by becoming equipped with company sponsored cell phones. The initiative will meet the company's high standards of ethics and integrity and would increase our ability to meet the responsibility we have to our customers, their families, our employees, the environment and to the societies
Virtually any observation of people in public would reveal two very distinctive styles of cell phone use. There is one category of user who seems to make every possible effort to conduct cell phone conversations discretely and without unnecessarily broadcasting the content of their conversations to strangers. Unfortunately, there seems to be a much greater preponderance of the second category of user: those who seem to do the exact opposite,
In 2002, researchers partnered with the cell phone industry to conduct significant scientific studies on the health risks of cell phones. The FDA supported many studies in response to public concerns that radiation from cell phones may pose health risks. The contract between the FDA and the Cellular Telecommunications Industry Association (CTIA) allows the FDA to select scientists and oversee the projects, while the CTIA provides funding. Both entities
Stem cells are cells that can develop into other forms of cells; Evans's cells could develop into entire mice. Evans eventually began altering the genetic material in the stem cells, creating mice that had genetic material from other creatures and could pass that material on to their offspring" (313). These findings, together with the research conducted separately by Capecchi and Smithies, enabled several teams of researchers to develop knockout