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. So the ribosomes found on the rough Er basically synthesize these hydrolytic enzymes. And once synthesized, they are basically modified in some way by adding the endgycoacetic linkages. And then those hydrolytic enzymes are transferred into this membraneous sac known as the Golgi apparatus.