Question

match the words to their definitions
a. carrier protein b. channel protein c. concentration gradient d. diffusion E. dynamic equilibrium f. hypertonic solution g. hypotonic solution h. isotonic solution I. pH j. solute k. solution l. solvent

1. a transport protein that creates a hydrophilic channel for substances to cross the cell membrane with the concentration gradient via facilitated diffusion.
2. any external solution that has the same solute concentration and water concentration.
3. the net passive movement of molecules or particles from regions of higher to regions of lower concentration.
4. a transport protein that uses energy (ATP) to pump substances across the cell membrane against the concentration gradient via active transport.
5. when the forward and reverse processes occur at the same rate , resulting in no observable change in the system.
6. a liquid mixture in which the minor component (the solute) is uniformly distributed within the major component (the solvent.)
7. when the concentration of particles is higher in one area than another.
8. any external solution that has a high solute concentration and low water concentration.
9. a substance that can be dissolved into a solution by a solvent.
10. a liquid that is able to dissolve a solid.
11. an external solution that has a low solute concentration and high water concentration.
12. a measure of how acidic (or basic) a substance or solution is.

Answer 1

1. b
2. h
3. d
4. a
5. E
6. k
7. c
8. f
9. j
10. l
11. g
12. I