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.
Payne County is a county in the U.S. state of Oklahoma. As of the 2010 census, the population was 77,350. Its county seat is Stillwater. The county was created in 1890 as part of Oklahoma Territory and is named for Capt. David L. Payne, a leader of the  Boomers . Payne County comprises the Stillwater, OK Micropolitan Statistical Area. The county lies northeast of the Oklahoma City metropolitan area though many consider it an extension of the Oklahoma City metro area due to commuter patterns and other indicators.