The cellular molecules that you would expect to be soluble in a container of benzene would be the triglycerols which ae fats and oils in the cells, the cholesterol and the chains of fatty acids that are present. Benzene is a nonpolar solvent as it does not have any unequal sharing of electrons in its structure. You would expect that molecules that would have equal charges in their structures or the nonpolar molecules would readily dissolve in this solvent since like dissolves like. Along with this, all polar molecules would not be dissolved and be visible in the mixture since these are not miscible in benzene.