|How Surface Area to Volume Ratio Limits Cell Size
- A cell is a metabolic compartment where a multitude of chemical reactions occur.
- The number of reactions increase as the volume of metabolic volume within a cell increases. (The larger the volume the larger the number of reactions)
- 3.All raw materials necessary for metabolism can enter the cell only through its cell membrane.
- The greater the surface area the larger the amount of raw materials that can enter at only one time.
- Each unit of volume requires a specific amount of surface area to supply its metabolism with raw materials. The amount of surface area available to each unit of volume varies with the size of a cell.
- As a cell grows its SA/V decreases.
- At some point in its growth its SA/V becomes so small that its surface area is too small to supply its raw materials to its volume. At this point the cell cannot get larger.