Phyllis CS240 Cells Cells are the fundamental structural and functional units of all living organisms.
Cells take highly varied forms in different plants, animals, and microorganisms.
They may exist singly, as in bacteria or packed together by the millions or billions, as in larger plants and animals. The nuclues and the cytoplasm are separated by the nuclear envelope. DNA houses the heredity information in the nucleus. The cytoplasm is the protoplasm outside the cell nucleus. These are not all the components of the cytoplasm, However, it is all that will be covered in this webpage.