Multiple Choice
Identify the choice that best completes the statement or answers the question.
____ 1. The invention of the microscope made it possible for people to discover a. plants. b. skin. c. animals. d. cells.
____ 2. Which of the following statements is part of the cell theory? a. Only plants are composed of cells. b. All cells are produced from other cells. c. Cells can be produced from nonliving matter. d. Cells are one of several basic units of structure and function in living things.
____ 3. Which of the following statements is NOT part of the cell theory? a. Cells are the basic unit of structure and function in living things. b. All cells are produced from other cells. c. Only animals are composed of cells. d. All living things are composed of cells.
____ 4. Cells in multicellular organisms a. all look the same. b. all have the same structure. c. are often quite different from each other. d. are the same size in every part of the organism.
____ 5. What is the function of a cell wall? a. to protect and support the cell b. to perform different functions in each cell c. to prevent water from passing through it d. to prevent oxygen from entering the cell
____ 6. What is the function of a cell membrane? a. to support the cell b. to perform different functions in each cell c. to control what enters and leaves the cell d. to form a hard outer covering for the cell
____ 7. Which organelle is the control center of a cell? a. mitochondrion b. ribosome c. nucleus d. chloroplast
____ 8. Which of the following best describes the function of mitochondria? a. They convert energy from food molecules into energy the cell can use. b. They store energy from food molecules. c. They store energy from sunlight. d. They produce nucleic acids that release energy.
____ 9. Which organelles store food and other materials needed by the cell? a. mitochondria b. chloroplasts

c. ribosomes d. vacuoles
____ 10. Which organelles release chemicals that break down large food particles into smaller ones? a. endoplasmic reticulum b. Golgi bodies c. lysosomes d. vacuoles
____ 11. Which structures found in plant cells are also found in animal cells? a. endoplasmic reticulum and cell wall b. Golgi bodies and chloroplasts c. chloroplasts and lysosomes d. ribosomes and cell membrane
____ 12. When two or more elements combine chemically, they form a(n) a. lipid. b. atom. c. element. d. compound.
____ 13. All organic compounds contain the element a. water. b. oxygen. c. carbon. d. nitrogen.
____ 14. Enzymes are important because they a. contain water. b. speed up chemical reactions. c. contain genetic material. d. help the cell maintain its shape.
____ 15. Which term refers to the movement of molecules from an area of higher concentration to an area of lower concentration? a. collision b. diffusion c. active transport d. concentration
____ 16. Which term refers to the diffusion of water molecules through a selectively permeable membrane? a. osmosis b. engulfing c. active transport d. passive transport
____ 17. Which term refers to the movement of materials through a cell membrane without using the cell’s energy? a. concentration b. collision c. active transport d. passive transport
____ 18. Elements are related to compounds in that a. neither has atoms. b. compounds are made up of elements. c. both are found only in living organisms. d. elements are made up of compounds.
____ 19. Osmosis and diffusion are related in that

a. both are methods to stop movement of molecules across a cell membrane. b. osmosis is the movement of water across the cell membrane by diffusion. c. both involve the movement of large molecules across the cell membrane. d. both processes only work in red blood cells.
____ 20. Movement across a cell membrane that requires energy is called a. active transport. b. passive transport. c. engulfing. d. absorption.
Modified True/False
Indicate whether the statement is true or false. If false, change the identified word or phrase to make the statement true.
____ 21. You can’t see the cells in your body because most of them are very small. _________________________
____ 22. The cell theory states that cells are produced from nonliving cells. _________________________
____ 23. Organelles that use energy from sunlight to produce food are called mitochondria.
_________________________
____ 24. The compound carbon dioxide is composed of two hydrogen atoms and one oxygen atom.
_________________________
Completion
Complete each statement.
25. A microscope allowed Hooke to see “tiny rectangular rooms,” which he called ____________________.
26. Cells are the basic units of structure and ____________________ in living things.
27. According to the cell theory, all organisms are made of ____________________.
28. The nucleus of a cell has thin strands of ____________________ that contain genetic material.
29. Small grainlike bodies called ____________________ produce proteins inside cells.
30. Organelles known as ____________________ contain chemicals that break down food particles and old cell parts.
31. A structure found in plant cells but not in animal cells is the cell ____________________.
32. When two or more elements combine chemically, they form a(n) ____________________.
33. Sugars and starches are examples of organic compounds known as ____________________.
34. DNA and RNA belong to the group of organic compounds known as ____________________.
35. Small molecules called ____________________ make up proteins.
36. Oxygen molecules move across cell membranes through a process called ____________________.
37. The diffusion of ____________________ molecules through a selectively permeable membrane is called osmosis.
38. Your heart is made up of many groups of tissues that are working together, therefore, it is considered a(n)
____________________.

39. Energy from sunlight captured by________________________in plant cells enable plants to convert energy into food.
40. Just as multicellular organisms have organs to help their bodies carry out functions, an individual cell has
___________________.
Short Answer
Use the diagram to answer each question .
41. Name two structures that are not found in the cell shown here but that are found in plant cells.
42. Structure A is a Golgi body. Describe its function.
43. Identify the structures labeled B and describe their function.
44. Identify structure C and describe its function.
45. Identify the large round structure labeled D and describe its function.
46. Is the cell shown a plant cell? Explain your reasoning.

MULTIPLE CHOICE
1. ANS: D PTS: 1 DIF: L1
OBJ: CaLS.3.1.2 Explain how the invention of the microscope contributed to scientists' understanding of living things. STA: S 7.1 BLM: knowledge
2. ANS: B
STA: S 7.1
PTS: 1
BLM: knowledge
DIF: L1 OBJ: CaLS.3.1.3 State the cell theory.
3. ANS: C
STA: S 7.1
PTS: 1 DIF: L2
BLM: comprehension
OBJ: CaLS.3.1.3 State the cell theory.
4. ANS: C PTS: 1 DIF: L2
OBJ: CaLS.3.1.4 Explain how the cells of multicellular organisms are related.
STA: S 7.1 BLM: comprehension
5. ANS: A PTS: 1 DIF: L1
OBJ: CaLS.3.2.1 Identify the role of the cell wall and the cell membrane in the cell.
STA: S 7.1.b BLM: knowledge
6. ANS: C PTS: 1 DIF: L1
OBJ: CaLS.3.2.3 Name the organelles found in cytoplasm and describe their functions.
STA: S 7.1.b BLM: knowledge
7. ANS: C PTS: 1 DIF: L1
OBJ: CaLS.3.2.2 Identify the role of the nucleus in the cell.
BLM: knowledge
STA: S 7.1.c
8. ANS: A PTS: 1 DIF: L1
OBJ: CaLS.3.2.3 Name the organelles found in cytoplasm and describe their functions.
STA: S 7.1.d BLM: knowledge
9. ANS: D PTS: 1 DIF: L1
OBJ: CaLS.3.2.3 Name the organelles found in cytoplasm and describe their functions.
STA: S 7.1.b BLM: knowledge
10. ANS: C PTS: 1 DIF: L1
OBJ: CaLS.3.2.3 Name the organelles found in cytoplasm and describe their functions.
STA: S 7.1.b BLM: knowledge
11. ANS: D
BLM: comprehension
PTS: 1 DIF: L2
OBJ: CaLS.3.2.4 Describe how cells differ. STA: S 7.1.b
12. ANS: D PTS: 1 DIF: L1
OBJ: CaLS.3.3.1 Define elements and compounds. BLM: knowledge
13. ANS: C PTS: 1 DIF: L1
OBJ: CaLS.3.3.3 Identify the functions of carbohydrates, lipids, proteins, and nucleic acids.
BLM: knowledge
14. ANS: B PTS: 1 DIF: L1
OBJ: CaLS.3.3.3 Identify the functions of carbohydrates, lipids, proteins, and nucleic acids.
BLM: knowledge
15. ANS: B PTS: 1 DIF: L1
OBJ: CaLS.3.4.1 Describe how most small molecules cross the cell membrane.
STA: S 7.1.a BLM: knowledge
16. ANS: A PTS: 1 DIF: L1

OBJ: CaLS.3.4.2 Explain why osmosis is important to cells. STA: S 7.1.a
BLM: knowledge
17. ANS: D PTS: 1 DIF: L1
OBJ: CaLS.3.4.3 Tell the difference between passive transport and active transport.
STA: S 7.1.a BLM: knowledge
18. ANS: B PTS: 1 DIF: L2
OBJ: CaLS.3.3.1 Define elements and compounds. BLM: comprehension
19. ANS: B PTS: 1 DIF: L2
OBJ: CaLS.3.4.1 Describe how most small molecules cross the cell membrane.
STA: S 7.1.a BLM: analysis
20. ANS: A PTS: 1 DIF: L2
OBJ: CaLS.3.4.3 Tell the difference between passive transport and active transport.
STA: S 7.1.a BLM: comprehension
MODIFIED TRUE/FALSE
21. ANS: T
OBJ: CaLS.3.1.1 Tell what cells are.
22. ANS: F, living
PTS: 1
STA: S 7.1
DIF: L1
BLM: knowledge
PTS: 1
STA: S 7.1
DIF: L2
BLM: comprehension
OBJ: CaLS.3.1.3 State the cell theory.
23. ANS: F, chloroplasts
PTS: 1 DIF: L1
OBJ: CaLS.3.2.3 Name the organelles found in cytoplasm and describe their functions.
STA: S 7.1.b BLM: knowledge
24. ANS: F, water
PTS: 1 DIF: L2
OBJ: CaLS.3.3.2 Explain how water is important to the function of cells.
BLM: comprehension
COMPLETION
25. ANS: cells
PTS: 1
STA: S 7.1
26. ANS: function
PTS: 1
STA: S 7.1.a
27. ANS: cells
PTS: 1
STA: S 7.1.a
28. ANS: chromatin
DIF: L1
BLM: knowledge
DIF: L1
BLM: knowledge
DIF: L1
BLM: knowledge
OBJ: CaLS.3.1.1 Tell what cells are.
OBJ: CaLS.3.1.1 Tell what cells are.
OBJ: CaLS.3.1.3 State the cell theory.

PTS: 1 DIF: L1
OBJ: CaLS.3.2.3 Name the organelles found in cytoplasm and describe their functions.
STA: S 7.1.c BLM: knowledge
29. ANS: ribosomes
PTS: 1 DIF: L1
OBJ: CaLS.3.2.3 Name the organelles found in cytoplasm and describe their functions.
STA: S 7.1.b BLM: knowledge
30. ANS: lysosomes
PTS: 1 DIF: L1
OBJ: CaLS.3.2.3 Name the organelles found in cytoplasm and describe their functions.
STA: S 7.1.b BLM: knowledge
31. ANS: wall
PTS: 1
STA: S 7.1.b
DIF: L2 OBJ: CaLS.3.2.4 Describe how cells differ.
BLM: comprehension
32. ANS: compound
PTS: 1
BLM: knowledge
DIF: L1 OBJ: CaLS.3.3.1 Define elements and compounds.
33. ANS: carbohydrates
PTS: 1 DIF: L1
OBJ: CaLS.3.3.3 Identify the functions of carbohydrates, lipids, proteins, and nucleic acids.
BLM: knowledge
34. ANS: nucleic acids
PTS: 1 DIF: L1
OBJ: CaLS.3.3.3 Identify the functions of carbohydrates, lipids, proteins, and nucleic acids.
STA: S 7.1.a BLM: knowledge
35. ANS: amino acids
PTS: 1 DIF: L1
OBJ: CaLS.3.3.3 Identify the functions of carbohydrates, lipids, proteins, and nucleic acids.
STA: S 7.1.a BLM: knowledge
36. ANS: diffusion
PTS: 1 DIF: L2
OBJ: CaLS.3.4.1 Describe how most small molecules cross the cell membrane.
STA: S 7.1.a BLM: comprehension
37. ANS: water
PTS: 1
STA: S 7.1.a
DIF: L1
BLM: knowledge
OBJ: CaLS.3.4.2 Explain why osmosis is important to cells.
38. ANS: organ
PTS: 1 DIF: L2
OBJ: CaLS.3.1.4 Explain how the cells of multicellular organisms are related.

STA: S 7.5.a
39. ANS: chloroplasts
BLM: application
PTS: 1 DIF: L2
OBJ: CaLS.3.3.2 Explain how water is important to the function of cells.
STA: S 7.1.d BLM: comprehension
40. ANS: organelles.
PTS: 1 DIF: L2
OBJ: CaLS.3.1.4 Explain how the cells of multicellular organisms are related.
STA: S 7.1.a BLM: application
SHORT ANSWER
41. ANS: cell wall, chloroplast
PTS: 1 DIF: L2
OBJ: CaLS.3.2.3 Name the organelles found in cytoplasm and describe their functions.
STA: S 7.1.b BLM: analysis
42. ANS:
Golgi bodies package proteins and other newly formed materials and distribute them to other parts of the cell.
PTS: 1 DIF: L1
OBJ: CaLS.3.2.3 Name the organelles found in cytoplasm and describe their functions.
STA: S 7.1.b BLM: knowledge
43. ANS:
The structures are mitochondria. Mitochondria produce most of the energy the cell needs to carry out its functions.
PTS: 1 DIF: L2
OBJ: CaLS.3.2.3 Name the organelles found in cytoplasm and describe their functions.
STA: S 7.1.b BLM: comprehension
44. ANS:
C is the endoplasmic reticulum, which transports proteins.
PTS: 1 DIF: L2
OBJ: CaLS.3.2.3 Name the organelles found in cytoplasm and describe their functions.
STA: S 7.1.b BLM: comprehension
45. ANS:
D is the nucleus, which directs all of the cell’s activities.
PTS: 1 DIF: L2
OBJ: CaLS.3.2.3 Name the organelles found in cytoplasm and describe their functions.
STA: S 7.1.c BLM: comprehension
46. ANS:
No, because it does not contain a cell wall or chloroplasts.
PTS: 1 DIF: L2

OBJ: CaLS.3.2.3 Name the organelles found in cytoplasm and describe their functions.
STA: S 7.1.c BLM: analysis