Why Cells Are Small Free Essay, Term Paper and Book Report
Cells are the basic structural and functional units of life. As life on earth has evolved into organisms of varying complexities, two basic laws of nature have dictated why cells have remained so small. Shorter is faster. This is true both in terms of diffusion and in terms of chemical and electrical movement. By minimizing the the distance between a cells nucleus and and the numerous proteins and organelles that it must constantly regulate , a cell is maximizing the speed in which intercellular communications can take place while providing the ideal conditions for diffusion: a vital function in the life of a cell. Like wise, the surface area and volume of a cell are directly influential in the efficiency of the cells nutrient absorption and waste expulsion processes. Since the cell membrane of a eukaryotic cell is its only source of nutrition, its surface area must be large enough to allow the cells organelles to receive the materia ls it needs. This is done by maximizing the surface area to volume ratio. By using the surface area and volume equations for a sphere(4r2 and 4/......
Word Count: 295
Page Count: 1.1 (250 words a page / double spaced)
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