Part 1 of Essay
are some of the smallest organisms around. All living things consist of , and yet they are invisible to the naked eye. How and why are they so small? Well, are the basic structural and functional units of life. As life on earth has evolved into organisms of different species and living things, two basic laws of nature ....

Part 2 of Essay
.... of the cell’s nutrient absorption and waste expulsion processes. Since the cell membrane of an eukaryotic cell is its only source of nutrition, its surface area must be large enough to allow the cell’s organelles to receive the material it needs or it will die. The eukaryotic cell does this by maximizing the surface area to volume ratio. By using the surface area and volume equations for a sphere you can estimate the surface area of a small cell. By modeling the growth rate of the surface area and volume of a sph ....