Molecular and cellular biomechanics is the branch of biomechanics that deals with single molecules, molecular interactions, or cells as the system of interest. Cellular Biomechanics. Cell mechanics is a vast field of a long history and prominent work of many pioneering scientists. Cells are the structural and functional units of all living organisms. Cells are continually subjected to mechanical loads from a wide variety of sources. It is known that normal cellular functions, including motility. Computational approaches can complement the experimental studies of cell mechanics. The currently developed computational approaches are classified into continuum and discrete approaches. Continuum approaches assume that the smallest length scale of interest is larger than the dimensions of the microstructure. Continuum approaches have been widely used to describe how strains and stresses are distributed within a cell.