1.
The dispersal of ammonia fumes from a broken bottle of cleaning fluid is an example of
A. diffusion B. osmosis C. active transport D. pinocytosis
2.
Which structure regulates what enters and leaves the cell?
A. nucleus B. cell wall C. nuclear envelop D. cell membrane
3.
The fundamental structure of the plasma membrane is determined almost exclusively by:
A. phospholipid molecules C. transport proteins
D. carbohydrate molecules B. cholesterol molecules
4.
A plasma membrane is considered semi-permeable if it allows
A. all materials to pass through
B. only some materials pass through
C. material to go in, but not out
D. materials to go out, but not in
5.
Animal cells do not contain
A. nuclei B. vacuoles C. cell walls D. cell membranes
6.
A bone cell has a high content of calcium, yet wants to absorb even more calcium in order to become stronger. The movement of more calcium in would be done by
A. active transport B. osmosis C. diffusion D. facilitated transport
7.
--- have the ability to convert solar energy into chemical energy and store it in food.
A. nucleoli B. mitochondria C. chloroplasts D. lysosomes
8.
The movement of glucose into and out of cells through protein channels in the cell membrane is an example of
A. facilitated diffusion B. osmosis C. active transport D. endocytosis
9.
If a 10% sucrose solution within a semipermeable sac causes the fluid volume in the sac to increase a given amount when the sac is immersed in water, what can be said about the water relative to the sac?
A. The water is hypertonic to the sac.
B. The water is hypotonic to the sac.
C. The water is isotonic to the sac.
D. The water is impermeable to the sac.
10.
Endocytosis and exocytosis are both considered forms of --- because they use ---.
A. osmosis, water
B. active transport, energy molecules
C. passive transport, energy
D. facilitated transport, carrier
11.
The diffusion of water is best known as
A. osmosis B. endocytosis c. exocytosis D. facilitated diffusion

12.
For diffusion to occur, there must be
A. transport proteins in the cell membrane
B. concentration difference
C. energy
D. semipermeable membrane
13.
The movement of substances from an area of low concentration to an area of high concentration is known as d.
A. dissolving B. osmosis C. diffusion D. active transport
Fishmoore City Cell Analogy Read the following short description of a very special town called Fishmoore City. Then, match the parts of the city (underlined) with the parts of the cell listed below.
In a far away place called Fishmoore City, the main export and production product is the magnificent widget. Everyone in the town has something to do with widget making and the entire town is designed to build and export widgets. The town hall has the instructions for widget making. Widgets come in all shapes and sizes and any citizen of Fishmoore can get the instructions and begin making their own magnificent widgets. Widgets are generally produced in small shops around the city. These small shops are built by the carpenter’s union (whose headquarters are in town hall). The widget shops are located on a maze of streets that wind throughout Fishmoore City.
After a widget is constructed, they move on special widget carts through the maze of streets which can deliver the widget anywhere in the city. In order for a widget to be exported it will travel to the postal office where stamps are added and the widgets are labeled for export. But sometimes widgets don’t turn out right, and the “rejects” are sent to the scrap yard where they are broken down for parts or destroyed altogether. The town powers the widget shops from a hydraulic dam that is in the city. The entire city is enclosed by a large wooden fence, only the postal trucks (and citizens with proper passports) are allowed outside the city.
14. mitochondria = __________________________
15. ribosomes = __________________________
16. nucleus = __________________________
17. endoplasmic reticulum = ______________________
18. Golgi apparatus = _______________________
19. protein = ____________________
20. cell membrane = _______________________
21. lysosomes = _______________________
22. nucleolus = _______________________

Answer the questions below using complete sentences. Be sure to answer all parts of the question.
23. Suppose you were to add a drop of blue ink to a beaker of water and allow it to remain undisturbed for a few hours. After this time, you notice that the water is uniformly blue. How do you explain this?
24. Compare and contrast active transport and passive transport. Be specific and use examples.
25. Why does a fresh water protozoan require a contractile vacuole that constantly works to pump out water?