Unlike eukaryotic cells, prokaryote cells lack membrane-bound organelles. However, whereas
prokaryote cells are less structurally complex than eukaryotes, they are more chemically complex,
since all of the prokaryote cell's biomolecules are floating around together. These biomolecules must
interact only with other appropriate molecules to perform biological function.
Prokaryotic cells contain a single compartment enclosed within the cell membrane. In this space
reside DNA, RNA, ribosomes and other molecules. Prokaryotes lack a defined nucleus (which is
where DNA and RNA are stored in eukaryotic cells), mitochondria, ER, golgi apparatus, and so on.
In addition to the lack of organelles, prokaryotic cells also lack a cytoskeleton. Recall that in addition
to its role as structural support for the interior of the cell, the cytoskeleton is also involved in
intracellular organelle transport. Since there are no organelles to be transported in prokaryotic cells,
such a function is unnecessary.
Like the eukaryote cell, the prokaryote cell is filled with cytosol. The prokaryote cytosol is filled with
enzymes, which carr