These digestive enzymes in a cell are encolsed in a membrane-bound organelle to ensure that these digestive enzymes don't digest the other cell organelle or the cell itself. The membrane ensures that what passes from the digestive organelle are to be processed or sometimes destroyed like wastes or such antibodies.
These digestive enzymes are mostly present in the white blood cell of most living organisms because they also help to destroy and to eliminate such parasitic and infiltrating microorganisms such as bacteria, virus and other antibodies.
