Day 4

3. holding as much water or moisture as can be absorbed
9. It is the structural backbone of lipid molecules
10. the process of capturing a substance or particle from outside the cell by engulfing it with the cell membrane
11. process of transporting molecules from one side of the membrane to the other without any energy requirements
13. a barrier to the passage of molecules and ions into and out of the cell
14. a carboxylic acid consisting of a hydrocarbon chain and a terminal carboxyl group

1. a process by which the contents of a cell vacuole are released to the exterior through fusion of the vacuole membrane with the cell membrane
2. the state or quality of a material or membrane that causes it to allow liquids or gases to pass through it
4. lacking an affinity for water
5. the movement of water molecules from a solution with a high concentration of water molecules to a solution with a lower concentration of water molecules
6. microscopic membrane of lipids and proteins which forms the external boundary of the cytoplasm of a cell or encloses a vacuole
7. a type of passive transport
8. water loving
12. the movement of ions or molecules across a cell membrane into a region of higher concentration