Now, because the Lysosome contains these hydrolytic enzymes and also contains a low PH. The Lysosome also has the ability to basically destroy that cell. So if the Lysosome decides to basically rupture, it releases all these harmful types of things inside the cytosol and that can kill the cell. Now, why exactly would a cell want to kill itself? Well, imagine that the DNA of the cell is somehow damaged and that could cause serious problems. So to basically kill off the cell, the Lysosome can rupture and that destroys the cell, as well as killing off that type of DNA that was basically damaged.