Cells transport

5. when molecules are moving in and out of the cells equally
6. uses no energy to cross the membrane
8. molecules moving from low concentration to high concentration
9. lets some things in but not others
11. made up of two layers of lipids and proteins
12. a process by which molecules tend to pass through a semipermeable membrane
13. molecules moving from high concentration to low concentration

1. uses energy to cross the cell membrane
2. cell membrane is studded with protein and carbohydrates that are in constant motion
3. no energy needed and proteins act like tunnels
4. taking in of matter by a living cell
7. stuff move from ares of high concentration to low concentration
10. a process by which molecules the vacuole are released