surface tension of plasma membrane
The surface area-to-volume ratio of the cell.
The surface area-to-volume ratio of the cell.
The cell membrane is the answer! Thanks for asking!
cell size is limiteb by the ratio of the suface area to volume as the cell becomes longer this rate decreases at some size a cells suface area will become too small for materials to enter the cell quickly enough to meet the cells need
eubacteria
The size to mass ratio
No, all multicellular organisms have the same size cells.
All living things are made up of cells. Because they are small in size does not mean that their cell size is small. Generally cells are the same size between organisms.
cell size is limiteb by the ratio of the suface area to volume as the cell becomes longer this rate decreases at some size a cells suface area will become too small for materials to enter the cell quickly enough to meet the cells need
the need for surface area
It's called the square-cube law. If an object (such as a cell) increases in size [say doubles] then its volume (or mass) goes up by the cube of the size, but its surface area increases only by the square of its size. Thus a doubling will produce a 4 fold increase in surface but an 8 fold increase in mass. Since cells depend on diffusion of molecules through its surface, it can outgrow its ability to acquire new materials (or to get ride of waste. This rule also limits the size of insects (actually all animals).
Cells are of a small size because of consideration of the proportional relationship between surface area and volume. The size of cells also becomes a benefit when considering the rate at which cells die and are being replaced.