Cell size is important because it impacts the surface area to volume ratio, which determines how quickly materials can move in and out of the cell via diffusion. The surface area to volume ratio is calculated by dividing the surface area by the volume. While animal cell sizes are generally consistent, cell size can still influence cellular functions.

1. Does Cell Size Matter?
Cell Diffusion What is surface area
to volume ratio?
Surface Area
divided by the
Volume.
All animal cells are the
same relative size.
Cell size
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