These are small membrane enclosed structures that have a digestive function. They breakdown foreign materials and intracellular constituents that are no longer needed by the cell. Peroxisomes Are membrane-bounded vesicles containing oxidative enzymes that generate and destroy hydrogen peroxide. They are large vesicles especially prominent in plant cells. They have a role in maintaining water balance.
Vacuoles can digest macromolecules and store both waste products and nutrients.
It is a small spherical structure within the nucleus that contains DNA information to form ribosomes. It consists of an outer and inner membrane. Occasional connections occur between the outer and inner membranes forming the nuclear pores. The nuclear pores help regulate flow of materials between the nucleus and the cytoplasm and serve as attachment points for chromatin fibers. Ribosomes These are organelles on which protein synthesis occurs.