Movement Across a Cell Membrane
Across
2. no energy is required
4. movement of water out of the cell
5. energy
9. movement from a concentration to a low concentration that does not require the input of energy
10. no net movement of water across the membrane
12. movement of water into the cell
13. the passive diffusion of water
15. The pressure exerted by the movement of water in osmosis
18. motion that occurs because of the intrinsic energy of the molecule
Down
1. requires a specific carrier but no energy
3. A cell uses energy from ATP to move solutes against the concentration gradient
5. energy is required
6. large particles from inside the cell to the outside of the cell
7. the net movement reaches zero but the molecules are still in motion
8. engulfs large material
11. the difference between movement in one direction from movement in another direction
14. difference in the amount of material on each side of a membrane
16. this is the movement of large particles from outside the cell to inside the cell
17. engulfs molecules dissolved in water