Lysosomes are membrane-bound vesicles that contain hydrolytic enzymes. These enzymes digest particles or cells taken into the cell by phagocytosis. They also digest old organelles such as micochondrianucleic acids, lipids, and The hydrolytic enzymes that degrade proteins, to carbohydrates are formed in the endoplasmic reticulum and then transported the Golgi apparatus by transport vesicles.