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Limitations on Cell Growth
Cells require many components to survive such as nutrients, solutes, water, etc. Furthermore, these components are constantly being exchanged through the cell's membrane, and this exchange is limited by the cell's surface area.
As a cell grows, its volume increases at a faster rate than its surface area. Therefore, the volume of a cell is limited by its surface area, which is directly related to its ability to permeate required materials through its membrane.

