Multiple Choice (2 points each)
Identify the choice that best completes the statement or answers the question.

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1. Refer to the illustration above. In eukaryotic cells, where are chromosomes found?

a.	Structure 1.	c.	Structure 3.	
b.	Structure 2.	d.	Structure 5.	

2. Refer to the illustration above. What is the function of structure 2?

a.	Transport material from one part of the cell to another.	
b.	To package proteins so they can be stored by the cell.	
c.	As a receptor protein.	
d.	To produce ATP.	

3. Refer to the illustration above. Why is the cell shown probably an animal cell? 
a.	Has mitochondria.	c.	Has a cell membrane.	
b.	Does not have a cell wall.	d.	Does not have a nucleus.	

4. Refer to the illustration above. Which structure acts as a gate to the cell’s interior?
a.	Structure 1	c.	Structure 3	
b.	Structure 2	d.	Structure 4	

5. Which of the following is one difference between prokaryotes and eukaryotes?
a.	Nucleic acids are found only in prokaryotes.	
b.	Eukaryotes contain mitochondria.	
c.	Organelles are found only in prokaryotes.	
d.	Prokaryotes have a nuclear membrane. 	

6. Which of the following is an example of a prokaryotic cell?
a.	Amoeba	c.	Bacterium	
b.	Virus	d.	Liver cell	

7. Which type of molecule forms a lipid bilayer within a cell membrane?
a.	Protein	c.	Nucleic acid	
b.	Phospholipid	d.	Carbohydrate	

8. Which of the following are characteristics of proteins that are found in the cell membrane? 
a.	It has two polar ends that are attracted to water.	
b.	It floats in the cell membrane.	
c.	It has a nonpolar middle section.	
d.	All of the above are true	

9. Plant cells have a large membrane-bound space in which water, waste products, and nutrients can be stored. What is this space called?
a.	Mitochondrion.	c.	Golgi apparatus.	
b.	Chloroplast.	d.	Central vacuole.	

10. Refer to the illustration above. What is the structures labeled 4?
a.	Vesicles.	c.	Ribosomes.	
b.	Lysosomes.	d.	Chloroplasts.	

11. Refer to the illustration above. Which structure packages and distributes proteins and lipids?
a.	Structure 1	c.	Structure 3	
b.	Structure 2	d.	Structure 4	

12. Which of the following structures are parts of the plant cell but not part of an animal cell?
a.	Chloroplast, cell wall, central vacuole	c.	Cell wall, nucleus, central vacuole	
b.	Chloroplast, nucleus, mitochondria	d.	Cell wall, chloroplast, nucleus	

13. Which of the following helps plant cells remain rigid?
a.	Cell membrane	c.	Chloroplast 	
b.	Nucleus	d.	Central Vacuole	

14. Which of the following organelles enables plants to make carbohydrates form carbon dioxide and water?
a.	Central Vacuole 	c.	Chloroplast	
b.	Nucleus 	d.	Cell Wall	

15. Investigators have cultured cells in a medium containing radioactive molecules. Within 20 minutes, the molecules have been taken into the cell. Within 60 minutes, the molecules are found throughout the endoplasmic reticulum.  This evidence supports which hypothesis about ER? 
a.	Deals only with radioactive materials	
b.	Has an unknown function	
c.	Is the transport system within the cell	
d.	Uses vesicles to breakdown the radioactive material	

16. Some single celled organisms have only one mitochondria.  What can you infer about the energy needs of these cells?
a.	They have very low energy needs.	
b.	They have very high energy needs	
c.	Their needs fluctuate depending on temperature.	
d.	Their needs fluctuate depending on pressure.	

17. Which of the following is the correct order of organization of structure in living things, from simplest to complex?
a.	Organ systems, organs, tissue, cells, organelles, organism	
b.	Tissues, cells, organs, organelles, organ systems, organism	
c.	Cells, organelles, tissues, organs, organ systems, organism	
d.	Organelles, cells, tissues, organs, organ systems, organism	

18. The cell membrane of the red blood cell will allow water, oxygen, carbon dioxide, and glucose to pass through. What is this membrane called that blocks other substances from entering?
	a. perforated
	b. semi-permeable
	c. non-conductive
	d. permeable

19. Who was the first person to observe cork cells under a microscope?
a.	Hooke	c.	Virchow	
b.	van Leeuwenhoek	d.	Schwann	

20. Who was the first person to observe cellular reproduction?
a.	Hooke	c.	Virchow	
b.	van Leeuwenhoek	d.	Schwann	

21. Which of the following is NOT part of the cell theory?
a.	All living things are made of one or more cells.	
b.	All cells contain the same organelles.	
c.	Cells are the basic units of structure and function in organisms.	
d.	All cell arise from existing cells. 	

22. Which of the following were mostly likely the first cells on Earth?
a.	Colonial algae	c.	Protista	
b.	Eukaryotes	d.	Prokaryotes 	

23. Scientists have discovered that your body in order to defend and remove unwanted or dangerous cells like tumor cells can single a cell to go through “programmed cell death”.  This is when the cell commits suicide.  Which of the following organelles would assist in the process of cell death?
a.	Central Vacuole	c.	Lysosomes	
b.	Nucleus	d.	Ribososmes	

24. For your birthday you receive a dozen roses. Unfortunately you do not have a vase for water.  Instead you place the roses on you desk where they will receive plenty of light.  (You know plants need light from Biology class.)  At the end of the day the roses are wilted.  Which of the following explains what happened to the roses at a cellular level?
a.	The cell wall has busted due to an increase in water through erosion. 	
b.	The chloroplast has stopped producing ATP, the energy for the cell.	
c.	The cell wall has broken down due to the amount of sunlight.	
d.	The central vacuole has lost water through transpiration.	

25. You have discovered a new species. In order to identify and name the species you look at its cells under an electron microscope.  You identify a nucleus, and chloroplast, but not mitochondria.  What type of cell would you categorize this as?
a.	Eukaryote; Plant	c.	Prokaryote; Plant	
b.	Prokaryote; Animal	d.	Eukaryote; Animal	

26. Of the new species you identified in the above problem, you identified that the cell of the new species had a nucleus, and chloroplast, but not mitochondria.  Could this cell survive?
a. Yes
b. No

27. Which of the following is a main function of the cell wall?
	a. to store carbohydrates for later use
	b. to give the cell a rigid structure
	c. to package proteins for export
	d. to carry out photosynthesis

28. Which of the following statements correctly matches a cell part with its function?
a.	the cell membrane packages lipids for export
b.	the mitochondria perform photosynthesis
c.	the lysosome digests molecules
d.	the nucleus produces energy

The drawing below represents an organism that a student observed when examining a sample of pond water with a light microscope.  

Flagellum

Nucleus

Cell membrane

Chloroplast

The student identified this organism as a prokaryote.

	29a. Was the student’s identification accurate? Explain your answer using information from the diagram.

	29b. Identify three similarities between the cells of prokaryotes and eukaryotes.

30. 

         ???

A well-defined  nuclear membrane

DNA

chloroplasts

mitochondria

A rigid coat of cellulose

Has

Contains

Is surrounded by

Which of these best completes this concept map?
a.	An animal cell
b.	A prokaryotic cell
c.	A virus
d.	A plant cell

Short Answer

31. Identify which picture is a bacterial cell, plant cell, and animal cell.  

 
 
		Cell 1: _______________		Cell 2: ______________	   Cell 3: ______________

32.	Draw a picture of the cell membrane.  Be sure to identify the following: hydrophobic region, hydrophilic region, inside of cell, outside of cell, and protein

Size of cell in micrometers(µm)
	
Rate at which molecules move (µm/second)

2 µm	
10 µm/sec	

4 µm	
8 µm/sec	

8 µm	
6 µm/sec	

16 µm	
4 µm/sec	

A student wanted to determine how the size of a cell affected the rate at which a cell could transport molecules across the cell membrane from the outside of the cell (extracellular) to the inside of the cell (intracellular).  The student collected the following data. 

33.	What is the independent variable in the experiment?
a.	The size of the cell
b.	The rate at which molecules are moved
c.	The extracellular space of the cell
d.	The cell membrane

34.	What is the dependent variable in the experiment?
a.	The size of the cell
b.	The rate at which molecules are moved
c.	The extracellular space of the cell
d.	The cell membrane

35.	Which of the following is an appropriate hypothesis?
a.	If the rate at which molecules are transported across a semi-permeable membrane is affected by the size of the cell then the small cell will transport molecules at a faster rate because the molecule will have less distance to travel.
b.	If the size of the cell is affected by the rate at which molecules are transported across a semi-permeable membrane then the small cell will transport molecules at a faster rate because the molecule will have less distance to travel.
c.	The rate of molecules being transported across a cell membrane is dependent on the type of cell being tested
d.	If the rate of molecules being transported is affected by the type of cell being tested then the size of the cell will matter.

36.	Which of the following would be an appropriate prediction for a cell that is 14 µm big?
a.	12 µm/sec
b.	7 µm/sec
c.	5 µm/sec
d.	1 µm/sec

37.	Graph the data provided by the student on the following axes. Be sure to label axes and scale your graph appropriately. 

38.	Which of the following is an appropriate description of the data observed?
a.	As the size of the cell increases, the rate at which molecules move increases
b.	As the size of the cell increases, the rate at which molecules move decreases
c.	As the size of the cell decreases, the rate at which molecules move decreases
d.	There is no clear relationship between the size of the cell and the rate at which molecules move