1 Profession: Actor, Screenwriter, Director. 2  Biography: An icon of machismo and Hollywood action heroism, Sylvester Stallone is responsible for creating two characters who have become a part of the American cultural lexicon: Rocky Balboa, the no-name boxer who overcame all odds to become a champion, and...
In general, the functions of lysosomes involve breaking-down i.e. processing to 'make safe' or make use of, or removing from the cell e.g. by exocytosis, useless and potentially harmful materials such as old worn-out parts of the cell or potential threats such bacteria.
1 Lysosomes breakdown/digest macromolecules (carbohydrates, lipids, proteins, and nucleic acids), repair cell membranes, and respond against foreign substances such as bacteria, viruses and other antigens.  Lysosomes contain enzymes that break down the macromolecules and foreign invaders.