Figure 23-2 T length nd the E ndi chron T mm i dy relatio ts the length uf a typical En ell ram Bacterial dna is compacted in a structure called the nucleoid. which occupies a large fraction of the bacterial cell's volume(Fig. 23-31).Bacterial DNA is compacted in a structure called the nucleoid, which occupies a large fraction of the bacterial cell's volume (Fig. 23-31)