Name ______Date ______Per______
Cell Transport Worksheet II
I. Fill in the Blank
1. ______The movement of H2O down its concentrationgradient (high low) is
knownas……
2. ______Carrier proteinsare involved inboth______diffusion and in ______.
______
3. ______Aplantcell placed in a hypotonic solution will become (specific term)……
4. ______Substances that travel across a cell membrane against theconcentration
gradient(low high) move by a process known as……
5. ______The process referred to in question #4 requires what(specifically)?
6. ______A cell with an internal concentration equal to that of the solution that it is placed in is
is known as .…
7. ______What will happen to an animal cellif placed in a solutioncontaining 100%
distilled water? (use a specific term)
II. Use the information provided to answer the questions that follow:
An artificial cell, containing a solution enclosed in a selectively permeable membrane, has just been immersed in a beaker containing a different solution. **The membrane is permeable to H2O, glucose, and fructose, but is completely impermeable to sucrose.
8. ______Which solute(s) will exhibit a net diffusion into the cell?
9. ______Which solute(s) will exhibit a net diffusion out of the cell?
10. ______Which solution (cell contents or beaker contents) is hypertonic?Why?
______
11. ______In which direction will the H2O move? (into the cell or out of the cell?)
12. ______What will happen to the cell after it has been in the beaker for an hour?
III. Name the Process
Name the process involved in moving molecules across the cell membrane in each of the following cases.
***When appropriate, use a more specific term.***
13. ______Fresh water moves into a single-celled organism
14. ______Pockets of the cell membrane fill with liquid andpinch off in a vesicle inside the cell.
15. ______O2 molecules move from the lungs into the bloodstream.
16. ______An amoeba engulfs a large particle of food.
17. ______Carrier proteins transport glucose into a muscle cell.
18. ______Na+ ions are pumped out of a red blood cell