A lysosome may contain up to 40 types of hydrolytic enzymes. They include proteases, i.e., for protein digestion) nucleases, glycosidases, lipases, phospholipases, phosphatases and sulphatases. All lysosomal enzymes are acid hydrolases, optimally active at pH-5 maintained with lysosome. The acid dependency of lysosomal enzymes prevent. the contents of the cytosol (pH ∼ 7.2) against any damage even if leakage of lysosomal enzymes should occur. Ribosomes are chemically composed of RNA and proteins as their major constituents. Ribosome is the site of protein molecules, which enclose their granular matrix. Peroxisomes are meant for H2O2 metabolism, glycolate cycle and β- oxidation of fatty acid.