8. Structure/Function: List as many organ or system exs of structure fits function as you can. 
9. Movement across a Membrane: List all the systems in which some component is based on movement of material across a cell or organelle membrane. List whether the movement is diffusion, osmosis, active transport, or bulk flow. Describe the adaptations that increase the efficiency of this movement. (list 8)
10. Cell-to-cell Communication: List all the systems in which some component is based on cellto-cell communication and describe how this is accomplished. (list 4)