1. Surface Area to Volume Ratios
11/12/2018 8:23 AM
Surface Area to Volume Ratios
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2. Cells Cells are microscopic.
If they were any larger, the centre of the cell would be too far away from the surface for efficient diffusion of essential molecules.
When growth of cells was studied, it was found that the cells grow until they have doubled in volume; then they divide.
The growth is not even, its rapid when the cell is small and slows down as the cell gets bigger.

3. Cells
Cell growth stops some time before cell division.

4. Surface Area and Volume
A large surface area and a low volume is the most efficient.
This cell has a high SA/Vol ratio
This means that the essential substances can get where they are needed and waste products can be disposed of.