Why are all animals cell types roughly the same size?

Question

Why are all animals cell types roughly the same size?

Answer 1

Natural Laws Limit Cell Size:- (Eg surface area/volume ratio)

Cell must be able to house (minimum size):

-DNA

-protein molecules

-internal structures to serve and reproduce

Cell must be able to (max size is limited):

-have adequate nutrients

-dispose of wastes

Big cells less surface area