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. Also, small numbers of ribosomes resembling those of prokaryotes occur in mitochondria and chloroplasts. The cytoskeleton is a network of filaments developed in eukaryotes to move components within the cell as well as the cell as a whole. Microtubules form part of the mitotic spindle that moves the chromosomes during cell division.