And inside the lysosome we have these digestive enzymes, these hydrolytic enzymes. And what they do is they basically recycle and break down the different types of byproducts which are produced inside the cells. So they break down things like large carbohydrates and glycosaminoglycans and glycolipids. And all this takes place inside the lysosomes. Now, these hydrolytic enzymes, under normal conditions are produced inside the Er, then modified inside the Golgi apparatus, and then they end up inside the lysosome. So how this process takes place is in the following way.