Cells have three main problems if they grow too large. 1. Diffusion is too slow to provide materials to the interior of a cell that is too large. Likewise, diffusion can't adequately take out all the wastes from a cell that is too large.
Guymon, Oklahoma. Guymon is a city in and the county seat of Texas County, Oklahoma. As of the 2010 census, the city population was 11,442, an increase of 6.5 percent from 10,472 in 2000. The 2012 census estimate grew to 11,930.
Grayson County, Texas. Grayson County is a county in the U.S. state of Texas. As of the 2010 census, its population was 120,877. The county seat is Sherman. The county was founded in 1846 and is named after Peter Wagener Grayson, an attorney general of the Republic of Texas.