Humans have loads of cells so they can reproduce so it doesn’t matter if a cell dies e.g. when you cut your skin it fixes itself. Organisms with 1 cell will easily die and probably not live very long unless they can breed.
between 5.6 and 13 cm long
After cleavage of the nucleoplasmin protein, only the tail segments appeared in the nucleus is evidence of a discrete nuclear localization signal somewhere on the nucleoplasmin protein.