Formulate a hypothesis on how bacterial cells use their characteristics to take up hydrocarbons from oil spills. Specify the mode of transport through the cell membrane (active vs. passive/endocytosis vs. exocytosis) and support your claim with scientific reasoning. Describe how these bacterial cells would take up hydrocarbons if:
- they only possessed a cell membrane and lacked the cell wall.
- they possessed membrane-bound organelles such as vesicles.

Include in your answer the lipid bilayer, structural components of cell membranes and those of cell walls, and discuss the selective permeability characteristic of membranes.