What Features Do Cajal Bodies, Interchromatin Granule Clusters, and Nucleoli

Question

What features do Cajal bodies, interchromatin granule clusters, and nucleoli have in common?
A) High permeability to the surrounding nucleoplasm
B) A network of macromolecules bound together by covalent linkages
C) A lipid bilayer membrane
D) The same set of RNA and protein molecules
E) The same size

Accepted Answer

Each nuclear subcompartment is a non-membrane-bound network of a specific set of RNA and protein molecules linked via noncovalent interactions to produce a distinct biochemical environment, despite their high permeability. They come in various sizes.