Bacteroides fragilis is a species classified under the genome bacteria. Bacteria have prokaryotic cell types.
Prokaryotic cells are approximately one hundredth the size of eukaryotic cells. They do not have any cell organelles enclosed by membranes including the nucleus. Eukaryotic cells have a nucleus enclosed by a membrane and there are other cell organelles bound by membranes also present in their cells.
Prokaryotic cells have a cell wall and it is quite complex in nature; eukaryotic cells usually do not have a cell wall. The flagella of prokaryotic cells consists of only two protein blocks and is simple as compared to eukaryotic cells.
Reproduction in prokaryotic cells is by binary fission whereas eukaryotic cells undergo mitosis.