Across
- 5. polar head nonpolar tail
- 6. doesn't like water
- 8. when molecules need help to get across because they are polar so they go through the channel proteins
- 11. helps molecules that have a little trouble getting through to the other side by opening and closing behind them
- 13. needs energy to get a molecule through
- 14. likes water
Down
- 1. type of active transport where the membrane fuses with the cell membrane to import materials from the outside
- 2. two layers
- 3. goes through the bilayer with no problem
- 4. balance between all body systems keeping the body functional
- 7. doesn't need energy to get through bilayer
- 9. when the molecules exit
- 10. controlling what comes in and out of the cell
- 12. releases a great amount of energy to help molecules go against the gradient flow