Lysosomes are membrane-enclosed organelles that contain an array of enzymes capable of breaking down all types of biological polymers—proteins, nucleic acids, carbohydrates, and lipids. Lysosomes function as the digestive system of the cell, serving both to degrade material taken up from outside the cell and to digest obsolete components of the cell itself. In their simplest form, lysosomes are visualized as dense spherical vacuoles, but they can display considerable variation in size and shape as a result of differences in the materials that have been taken up for digestion. Lysosomes thus represent morphologically diverse organelles defined by the common function of degrading intracellular material.
The lysosomes are aimed for the digestion of the macromolecules from phagocytosis, endocytosis, and autophagy. It also helps in the digestion of the foreign bacteria which attacks the cell and in this way they help in rapiaring damages caused to the plasma membrane. In addition, Lysosomes are also used for killing the cells that are no longer wanted like the cells in the tails of the tadpoles.