Why are cells microscopic? Explain in terms of volume, ratio and surface.?

Answer 1

The surface to volume ratio keeps them small for a couple reasons. S^2/V^3. The surface area increases in a squared, exponential manner, while the volume increases in a cubed, exponential manner. Not conducive to a cell carrying on cellular transports, for instance. Enzymes would have a hard time meeting up with their substrates in an ever expanding cell. For an example.

Answer 2

They are not microscipc, they are only microscopic to us because we are so much bigger then them that our naked eye can't see them. Other smaller creatures don't need a microscope to see cells.

Answer 3

if our cells where bigger than less nutrients would get inside the cell and more stuff that didnt belong their would get it
if our cells didnt have nutrients than they would die and we would have a big chunk of us missing (if we had large cells)

Answer 4

if they wernt, we would all be 50 ft. tall