Lysosomes contain 40-50 types of enzymes. The main enzymes are – nuclease (DNA-ase, RNA-ase), acid phosphatase, aryl phosphatase, acid lipase, phospholipase, esterase, sucrase, sulfatase, dextronase, lysozyme, collagenase etc. Enzymes work in acidic environment. Its coat is composed of lipids and proteins. It contains a small amount of sugar.