Download Unit 6 Test Review

Name ________________________________________Hr___
Unit 6 Test Review- Cell Boundaries – Ch 7-3
1.
What do Carbohydrate chains attached to proteins in the cell membrane act as? _____________
2.
A substance can pass freely through the phospholipids if it is ________________________
and/or_____________________.
3.
The cell membrane can be described as _________________ __________________ ,because it
allows only certain substance to pass through.
4.
What types of organisms do NOT have a cell wall? _________________________
5.
Is the head of the phospholipid molecule hydrophobic or hydrophilic? _____________________
What about the tail? _________________________
6.
The phospholipids molecule consists of a polar_____________ and a nonpolar _______________.
7. Diffusion stops because _________________________ has been reached.
8. The movement of glucose into cells is achieved by (what process)__________________________.
9. A contractile vacuole can be found in ________________ and used for ____________________
excess ________________.
10. The movement of substances FROM an area of LOW concentration TO an area of HIGH
concentration and requiring energy is called ______________________.
11. The movement of water through a selectively permeable membrane is ______________________.
12. The “eating” of a particle by a white blood cell or single celled organism, such as an Amoeba is
known as _________________________________.
13. Osmosis is a type of ________________transport . Osmosis is also a type of ________________
14. The release of a particle out of a cell is known as _________________________.
15. If oxygen moved into or out of the cell, what would this process be called? __________________
16. The movement of glucose into and out of red blood cells is an example of ______________________
17. Lipids, carbohydrates and proteins can all be found in what part of the cell? ___________________
18. How does the cell wall counteract osmotic pressure of the cell membrane? ____________________
___________________________________
40% H2O
60% Oxygen
60% H2O
40% Oxygen
19. Would oxygen be most likely to…move into the cell, move out of the cell, or go both ways equally? Circle
20. Would water be most likely to … move into the cell, move out of the cell, or go both ways equally? Circle
21. In the cell membrane, do the polar ends of the phospholipids make up the inside or outside of the lipid
bilayer? __________________________
Use the following scenario to answer the following questions
A SALTWATER FISH LIVES IN A 50% SALT/50% WATER ENVIRONMENT WHERE IT’S CELLS REMAIN A
CONSTANT SIZE. A BIOLOGIST THEN TRANSFERS THE FISH TO A FRESH 98%WATER ENVIRONMENT.
1. What is an isotonic solution for this cell? ___________________________
2. In the freshwater, is the amount of water entering the cells of the fish greater than, less than, or equal to
the amount of water leaving the cells? ______________________________________________
2. In the salt water, is the amount of water entering the cells of the fish greater than, less than, or equal to
the amount of water leaving the cells? _____________________________________________
3. In fresh water, the cells of the fish will probably become what size? _______________________
Plastic Bag Lab
1. What part of the cell did the plastic bag represent? _________________________________
2. What characteristic/property (not process) of this cell part was shown in this lab? ______________
3. Did the iodine molecules, move into the bag, move out of the bag, or not move at all? ______________
4. How do you know whether or not the iodine molecules moved? _______________________________
5. Did the starch molecules move into the bag, move out of the bag, or not move at all?
6. One molecule moved through the bag and the other did not, what does that show about the membrane?
7. By what process did the molecule(s) move? _________________________
Potato Lab
1. What process was demonstrated in this lab?
____________________
2. Did the potato get more firm or more flexible after being placed in the 50% water:50% salt solution? circle
3. Did the potato get more firm or more flexible after being placed in the 100% water solution? __________
Hypertonic, Hypotonic, or Isotonic?
45. Water will move out of the cell. ____________________
46. Water will move in and out of the cell at the same rate. ___________________
47. Water will move into the cell. ______________________
48. Has a lower concentration of water and higher concentration of solute than a cell. _______________
49. Has a higher concentration of water and lower concentration of solute than a cell. _______________
50. Has a concentration of water and solute equal to that of the cell. ____________________
51. Cell will expand in size. ___________________
52. Cell will shrink in size. _____________________
53. Cell will stay the same size. __________________
Diffusion Facilitated
diffusion
Active or
Passive
Transport
Movement of
molecules:
from__to__
Energy:
Yes or No
Movement:
Into cell
Out of cell Both
in & out
An example of
a molecules that
uses this
process
Osmosis
Endocytosis Exocytosis
Protein
pumps