Name Period

TEST #2 REVIEWStructures and Functions Label each part of the figure in the spaces provided.

This diagram represents a typical plant cell.

Complete each statement by writing the correct word in each space provided.

1. The regulates what goes into and out of a cell.

2. All cells are surrounded by .

3. The of a phospholipid molecule is polar, and the long

are nonpolar.

4. The bilayer is made up of a double layer of phospholipids.

5. All cells fit into one of two categories: or

.

6. The of a eukaryotic cell contains DNA and controls all cell

.

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In the diagram below, write P above the plant cell and A above the animal cell. Then identify the structures indicated by the number and write the name in the space provided.

3.

4.

6.

7.

11.

12.

13.

14.

For each of the numbered structures listed below, write the function in the space provided.

7. 13

8. 7

9. 14

10. 3

11. 12

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Directions: Complete the chart below, then answer the questions. 

Cell Part or Organelle Is It Found In A Plant Cell? Is It Found In A Animal Cell?Cell Membrane

Cell Wall

Chloroplast

Chromatin

Cytoplasm

Endoplasmic Reticulum

Mitochondrion

Nucleus

Nuclear Membrane

Ribosome

Questions:12. What cell parts do Animal cells have that Plant cells do not have?

13. What cell parts do Plant cells have that Animal cells do not have?

14. Why do Plant cells have cell walls and Animal cells do not?

Choose the phrase from column B that best describes the term from column A.

15. nucleus a. Converts food into energy in plant and animal cells

16. mitochondria b. The cell’s packaging and distribution center

17. chloroplast c. Act as a highway system through the cytoplasm

18. endoplasmic reticulum d. Storage center for cell’s DNA

e. Use the process of photosynthesis to make food

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Complete the table by checking the correct column for each statement.

Statement Prokaryotes Eukaryotes

Organisms that have cells lacking internal membrane-bound structures

Do not have a nucleus

Are either single-celled or made up of many cells

Generally are single-celled organisms

Organisms that have cells containing organelles

Read each statement. If the statement is true, write T in the space provided to the left. If the statement is false, correct the statement in the space below the statement.

19. The inside of a eukaryotic cell consists of the cytoplasm and organelles.

20. Each organelle in the cell carries out the same function.

21. Muscle cells, bone cells, nerve cells, and sperm cells are examples of specialized prokaryotic cells.

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Match the words listed below with their definitions below. Not all words will be used.

Cell Electron microscope NucleolusCell theory Endoplasmic reticulum NucleusCell wall Eukaryote OrganelleChlorophyll Flagella PhospholipidChloroplast Fluid mosaic model Plasma membraneChromatin Golgi apparatus PlastidCilia Homeostasis ProkaryoteCompound light microscope Lysome RibosomeCytoplasm Microfilament Transport proteincytoskeleton Mitochondria Vacuole

22. Cell having a nucleus and other membrane bound organelles.

23. Contains the cell’s DNA and manages cell function.

24. The process of maintaining the cells constant environment.

25. Organelles in which food molecules are broken down to produce energy.

26. Creates selective permeability of plasma membrane.

27. Rigid structure outside the plasma membrane of plant cells providing support.

28. Membrane sacs that receive and package proteins.

29. Serves as a boundary between the cell and its external environment.

30. Cell lacking a nucleus or other membrane-bound organelles.

Complete the table by checking the correct column for each statement.

Statement Isotonic solution

Hypotonic Solution

Hypertonic Solution

31. Causes a cell to swell

32. Doesn’t change the shape of a cell

33. Causes osmosis

34. Causes a cell to shrink

Study the diagrams of the cells. Then circle the word that best completes each sentence.5

35. Placing a cell in a hypertonic solution causes the cell to (swell, shrink, stay the same).

36. Placing the cell in an isotonic solution causes the cell to (swell, shrink, stay the same).

37. Placing the cell in an hypotonic solution causes the cell to (swell, shrink, stay the same).

Answer the following questions in complete sentences.

38. Does osmosis occur if a cell is placed in an isotonic solution?

39. Why does water enter a cell that is placed in a hypotonic solution?

40. What happens to the pressure inside a cell that is placed in a hypertonic solution?

41. What can happen to animal cells when placed in a hypotonic solution? Explain.

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Read each statement. If the statement is true, write T in the space provided to the left. If the statement is false, correct the statement in the space below the statement.

42. Diffusion is an active process that requires a cell to expand a great deal of energy.

43. During diffusion, molecules diffuse from a region where their concentration is low to a region where their concentration is higher until they are evenly dispersed.

44. When the concentration of solutes outside the cell is equal to the concentration of solutes inside the cell, the cell solution is isotonic relative to its environment.

Select the best answer. Write your answer in the space provided.

45. As a result of diffusion, the concentration of many substance

a) always remains greater inside a membrane

b) eventually becomes balanced on both sides of a membrane

c) always remains greater on the outside of a membrane

d) becomes imbalanced on both sides of a membrane

46. Diffusion takes place

a) only through a lipid bilayer memebrane

b) from an area of low concentration to an area of high concentration

c) only in lipids

d) from an area of high concentration to and area of low concentration

47. The dispersal of ink in a beaker of water is an example of

a) diffusion b) osmosis c) active transport d) endocytosis

48. Which of the following is an example of osmosis?

a) the movement of ions from an area of greater concentration to one of lesser concentrationb) the movement of ions from an area of lesser concentration to one of greater concentrationc) the movement of water from an area of greater concentration to one of lesser concentrationd) the movement of water from an area of lesser concentration to one of greater concentration

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