Lysosomes

These are spherical bodies, a few micrometer in diameter, surrounded by a single membrane, originated by Golgi apparatus and containing digestive enzymes. They occur only in the cytoplasm of animal cell, and function in the digestion of material taken into the cell by phagocytes, as bacteria are ingested by white blood corpuscles. Normally they function as destroyers of foreign particles and worn out cellular components. When the membrane of lysosomes is reputed, the cell undergoes chemical breakdown, or lysis, Since release of the enzymes, cause a cell to destroy itself by digesting its own proteins, lysosome have been referred as "Suicide Sacs" and this process is called Autophagy.