Ribosomes.
The nucleus contains a nuclear envelope which really means it has a double membrane surrounding it. The outer membrane is encrusted with ribosomes and is attached to the rough endoplasmic reticulum
The two membranes that surround and define the nucleus are the inner nuclear membrane and the outer nuclear membrane. These membranes are responsible for separating the nucleus from the rest of the cell and regulating transport in and out of the nucleus through nuclear pores.
Membranes surround cells. There are no cells found in membranes. Membranes are composed mostly of lipids.
Protons are contained within the nucleus, electrons surround the nucleus at a considerable distance (atomically speaking)
golgi bodies
10. -rund
Protection
There are 19 electrons in the potassium nucleus.
Electrons occupy special regions called energy levels, or shells, which surround the nucleus.
The nucleus.
the negatively charged particles that surround the nucleus of an atom are electrons.
one its called meninges