1. Cell Transport Chapter 5

2. In the passive transport of materials A. cells must use energy when materials enter the cell. B. cells use energy when materials leave the cell. C. cells do not use energy in this process. D. cells may or may not use energy depending upon the material moved.

3. Diffusion is the result of A. addition of energy to a system B. random molecular motion C. changing environments in a cell D. equilibrium concentrations inside cells

4. The fastest way to make soft carrots become firm and crisp is to put it in A. 95% solute concentration B. 100% solute concentration C. 0.9 % solvent concentration D. 100% solvent concentration E. 50% solute concentration

5. A biologist dilutes blood cells by adding water on a glass slide. As he watches the cells under the microscope, the cells seem to enlarge and finally burst. This is because he A. used distilled water B. used very salty water C. added the water too rapidly D. used dead cells

6. The one that would NOT affect the rate of diffusion through a membrane is the A. temperature B. size of the cell C. number of molecular collisions against the membrane D. pressure E. concentration of diffusing substance

7. If a freshwater plant like Elodea were placed in a highly concentrated salt solution, the cells would A. take in more water B. lose turgor pressure C. increase turgor pressure D. undergo cytolysis E. show no change

8. The shrinkage of a cell and its contents due to a loss of water is called A. plasmolysis B. cytolysis C. homeostasis D. active transport

9. Permeability is the ability of a A. substance to cause osmosis B. solution to move when placed in water C. molecule to move up a tube D. membrane to allow substances to pass in or out of it

10. The mechanism by which CO 2 is excreted from the cell is A. active transport B. plasmolysis C. cytolysis D. passive transport E. osmosis

11. The engulfing process by which liquids enter cells is A. diffusion B. osmosis C. plasmolysis D. turgor E. pinocytosis

12. You will die after a period of drinking only salt water because A. salt is not a sufficient diet B. all your cells will swell up and burst C. your tongue would swell and you couldn’t swallow D. all your cells will eventually become dehydrated

13. In which cell is cytolysis most likely to occur? 5% solute A. 15% solute B. 2% solute C. 0% solute

14. In which cell is plasmolysis most likely to occur? 5% solute A. 25% solute B. 18% solute C. 2% solute

15. Which cell is in a hypertonic environment? 5% solute A. 3% solute B. 10% solute C. 5% solute

16. A cell in an isotonic environment will… A. Have a net gain of water B. Have no net gain of water C. Have a net loss of water

17. What is a characteristic of a cell membrane? A. It is present in both animal and plant cells B. It is also known as semipermeable C. It is composed of cellulose D. All of the above E. Two of the above

18. The purpose of the contractile vacuole is to… A. Provide the organism with energy B. Engulf materials C. Remove excess water

19. A contractile vacuole is an example of what? A. Facilitated diffusion B. Active transport C. Plasmolysis D. Cytolysis

20. Proteins that are embedded in the plasma membrane to help transport larger molecules into a cell are called… A. Diffusion molecules B. Carrier molecules C. Pinocytosis molecules D. Phagocytosis molecules

21. During diffusion, molecules move from an area of ______ concentration to an area of ______ concentration A. Higher, higher B. Lower, lower C. Lower, higher D. Higher, lower

22. Movement of large molecules out of a cell is known as what? A. Endocytosis B. Exocytosis C. Pinocytosis D. Phagocytosis

23. The dispersal of Kool-Aid throughout a pitcher of water is an example of… A. Osmosis B. Active transport C. Diffusion

24. If you are testing for glucose, what should you use? A. Iodine B. Silver nitrate C. BTB D. Benedict’s solution

25. What color will the Benedict’s solution turn? A. Black B. White C. Orange

26. What can the rate of diffusion be affected by? A. Temperature B. Concentration gradient C. Pressure D. Two of the above E. All of the above

27. If you are testing for salt, what should you use? A. Iodine B. Silver nitrate C. BTB D. Benedict’s solution

28. Which of the following enters a cell by active transport? A. Glucose B. Water C. Sodium ions D. Potassium ions

29. What kind of solution is the second red blood cell in? A. Hypertonic B. Isotonic C. Hypotonic

30. What kind of solution is the second red blood cell in? A. Hypertonic B. Isotonic C. Hypotonic

31. This plant cell is undergoing… A. Plasmolysis B. Cytolysis C. Equilibrium

32. Which cell process occurred below? A. Exocytosis B. Endocytosis C. Pinocytosis D. Both B and C