Biology

3. Salt entering the cell when there is too much water, equalizing the amount of water and salt in the cell
6. a substance that is dissolved in a solution
7. the movement of individual molecules from an area of higher concetration to an area of lower concetration
11. the shrinkage of the cell due to the loss of water in the cell
12. a membrane that will allow certain molecules or ions to pass through it by diffusion and occasionally specialized "facilitated diffusion"
15. the hydrostatic pressure in excess of ambient atmospheric pressure which can build up in living, walled cells
16. the net movement of water across a semipermeable membrane
17. a liquid that is able to dissolve a solid
18. the transport of molecules that require the use of energy, in the form of an energy-storing chemical called ATP to help them cross the cell membrane

1. molecules diffuse across the the plasma membrane with assistance from membrane proteins, such as channels and carriers.
2. the state in which all forces acting on the body are balanced with an equal and opposite force.
4. when the concentration of particles is higher in one area than another
5. occurs when a cell bursts due to an osmotic imbalance that has caused excess water to diffuse into the cell
8. the movement of substances across a cell membrane down their concentration gradients, which does not require energy.
9. any external solution that has the same solute concentration and water concentration compared to body fluids.
10. Water entering the cell when there is too much salt, equalizing the amount of salt and water in the cell.
13. the ingestion of large particles and the uptake of fluids or marcomolecules in small vesicles
14. the fusion of secretory vesicles with the plasma membrane