Cells in the intestine have "wiggly" bits rather like hairs. Many human cells, such as lung cells and epithelial cells, adopt this approach. If a cell evolves a flat rather than round shape, it can maintain a constant volume while increasing its surface area. The smaller a cell is, the greater its volume to surface area ratio. There is a maximum size beyond which they can no longer function. Stay small.It is not by chance that our cells are so small.There are three key ways by which a cell can increase its surface area to volume ratio. How Can a Cell Increase its Surface Area to Volume Ratio? The bigger they get the more difficult it is for them to take up materials fast enough. So you can see that there is a negative relationship between size and efficiency in cells.
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