because prokaryote cells , unlike eukaryotic cells , do not have cytoskeletons and contractile proteins to transduce biochemical free energy into the mechanical work needed to achieve aspherical shapes and to divide , this paradox seems to be resolvable only by postulating that the details of the biochemical mechanism for wall growth vary in different regions of the surface , affecting the work required to enlarge the wall locally .
C0007634
cells
C0010853
cytoskeletons