The protoplasm
The protoplasm is all the living parts of a cell
The cytoplasm
The cytoplasm is the living material in a cell outside the nucleus
Ultrastructure
Ultrastructure is the detail of a structure as seen using an electron microscope
Chromatin
Chromatin is the name given to chromosomes when they are elongated and not dividing
Prokaryotic cells
Prokaryotic cells do not have a nucleus or membrane-enclosed organelles
Eukaryotic cells
Eukaryotic cells have a nucleus and cell organelles, all of which are enclosed by membranes