Structures the nucleus depends on?

the nucleus households most of the cell's genetic material found as a linear DNA molecules organized into chromosomes ... the structure of the nucleolus depends on its purpose in the nucleus there are a number of other structures found inside the nucleus and enough which are enclosed in their own membranes.

igneous rocks which formed by the crystallization of magma at the surface of the earth called extrusive rocks. they are characterized by fine-grained textures because the rapid cooling at or near the surface did not provide enough time for large crystals to grow.