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Essay / Research Paper Abstract
A 10 page research paper that examines the three principal systems utilized in cellular phone communication. The writer discusses Frequency Division Multiple Access (FDMA), Time Division Multiple Access (TDMA) and Code Division Multiple Access (CDMA). Bibliography lists 12 sources.
Page Count:
10 pages (~225 words per page)
File: D0_khcell.rtf
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Unformatted sample text from the term paper:
this paper properly! The "stars" of cellular biology-the components that are best at catching the imagination of the general public-- have always been DNA and RNA, the bearers of
the genetic code. However, while DNA provides the blueprints, it is the protein molecules that actually do the work of cellular function-the "blue collar workers" of cellular function, so
to speak. . Proteins are responsible for assembling, modifying and maintaining cellular function (Radetsky, 1995). Although proteins are the building blocks of the body when they roll off the
cellular assembly lines, they are nothing more than long chains of amino acids (Radetsky, 1995). As newly minted, one-dimensional strings, proteins are useless. They have to be bent and twisted
into complicated three-dimensional shapes that are held in place by chemical bonds in order to perform their myriad functions at the cellular level. Radetsky (1995) states that "Protein folding is
one of the marvels of nature" (p. 112). Researchers, such as Peter S. Kim of the Whitehead Institute for Biomedical Research and the Howard Hughes Medical Institute at MIT, have
been doing groundbreaking work in this field. New discoveries are illuminating the nature of proteins and also the relationship that they have to disease. Kims research suggests that protein mechanisms
may explain how viruses, such as the flu and HIV manage to work their way into our bodies at a cellular level (Radetsky, 1995). Furthermore, these findings suggests that
the key to stopping these viruses may lie in discovering the secrets behind the shapes that proteins take when they fold (Radetsky, 1995). Some proteins coil into loops and
spirals; others look like hairpins or as if someone pressed them into pleated sheets that resemble accordions (Radetsky, 1995). Any given protein may contain several of these shapes, each one
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