Answer:
a. Brick walls
b.
Brick walls - cell wall; is a boundary, gives the house structure like cell wall
Generator - mitochondria; turns fuel into energy like a mitochondrian that turns glucose into energy
Doors - cell membrane; controls what enters and what leaves like the cell membrane
Trash compactor - lysosome? vacuole? Breaks down waste and expells it
Conveyor belts - Endoplasmic reticulum (ER); moves materials around within a cell
Computer - nucleus; Contains all the genetic material that is used to direct every single cellular process similar to the computer that controls everything in the factory