Lysosomes are sacs of the cell filled with digestive enzymes. These digestive enzymes are synthesized by

Lysosomes are membrane-bound sacs containing powerful digestive enzymes, specifically acid hydrolases, which are capable of breaking down organic materials. These enzymes are proteins by nature and are synthesized on the ribosomes attached to the rough endoplasmic reticulum (RER) [3]. Once synthesized as precursors in the RER, they are transported to the Golgi apparatus for further processing, modification (such as N-glycosylation), and sorting [1]. The Golgi apparatus then packages these mature enzymes into vesicles that eventually form lysosomes [3]. While the Golgi bodies are crucial for the packaging and distribution of these enzymes, the actual site of their synthesis is the rough endoplasmic reticulum, which is specialized for producing proteins destined for secretion or for use within specific organelles like lysosomes [3].

Sources

1. [3] https://www.ncbi.nlm.nih.gov/books/NBK9838/
2. [1] https://pmc.ncbi.nlm.nih.gov/articles/PMC2112105/