What must occur before cell division

The process when cell divides is refereed to as mitosis.when a cell has copied all its DNA then the cell normally divides.

Before the mitosis occurs the cell has to replicate its DNA making a copy of each chromosome this phase is referred to as inter-phase while the cell division is referred to as mitosis

SUMMARY

A cell has to replicate its DNA making a copy of each  chromosome,called sister chromatids

answer; i believe the answer is hydraulic action;

. ph changes the ability of them he enzyme to dissolve in water.