What is apoptosis and necrosis *Apoptosis is a precomited cell death or programmed cell death ,it is physiological process *If apoptosis is not occuring in a tissue or organ,it proliferates into a tumor, *If apotosis dominates it is the disease of that organ it naturally occurs in the case of liver disease , kidney disease and heart disease *Necrosis is the inability of the cell to thrive at that particular environment *Necrosis will occur at diseased condition,where the cell can get insufficient oxygen supply