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Cell Structure and FunctionChapter Test B
Multiple Choice
Write the letter that best answers the question or completes the statement on the line provided.
_____ 1. Which of the following is NOT a principle of the cell theory?
a. Cells are the basic units of life.
b. All living things are made of cells.
c. Very few cells are able to reproduce.
d. All cells are produced from existing cells.
_____ 2. Which type of microscope can produce three-dimensional images of a cell’s surface?
a. transmission electron microscope
b. scanning electron microscope
c. simple light microscope
d. compound light microscope
_____ 3. Which of the following enclose their DNA in a nucleus?
a. prokaryotesc. eukaryotes
b. bacteriad. viruses
_____ 4. Which of the following organisms are prokaryotes?
a. plantsc. bacteria
b. animalsd. fungi
_____ 5. Which of the following is a function of the nucleus?
a. stores DNAc. builds protein
b. stores sugarsd. packages proteins
_____ 6. Which of the following is a function of the cytoskeleton?
a. helps a cell keep its shapec. surrounds the cell
b. contains DNAd. helps make proteins
_____ 7. Which structures are involved in cell movement?
a. cytoplasm and ribosomesc. microtubules and microfilaments
b. nucleolus and nucleusd. chromosomes
_____ 8. Which structure makes proteins using coded instructions that come from the nucleus?
a. Golgi apparatusc. vacuole
b. mitochondriond. ribosome
_____ 9. Which organelle would you expect to find in plant cells but not animal cells?
a. mitochondrionc. chloroplast
b. ribosomed. smooth endoplasmic reticulum
_____ 10. Which of the following structures serves as the cell’s boundary from its environment?
a. mitochondrionc. chloroplast
b. cell membraned. channel protein
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_____ 11. During diffusion, when the concentration of molecules on both sides of a membrane is the same, the molecules will
a. move across the membrane to the outside of the cell.
b. stop moving across the membrane.
c. continue to move across the membrane in both directions.
d. move across the membrane to the inside of the cell.
_____ 12. The diffusion of water across a selectively permeable membrane is called
a. osmotic pressure.c. pinocytosis.
b. osmosis.d. active transport.
Figure 7–1
_____ 13. Which means of particle transport is shown in Figure 7–1 above?
a. diffusionc. facilitated diffusion
b. osmosisd. active transport
_____ 14. Which term describes the relatively constant internal physical conditions of an organism?
a. cell specializationc. organ system
b. homeostasisd. unicellularity
_____ 15. A group of similar cells that perform a particular function is called
a. an organ.c. a tissue.
b. an organ system.d. a division of labor.
Completion
Complete each statement on the line provided.
16.All cells come from existing .
17. The small, dense region indicated in Figure 7–2 by the letter D is called the .
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18.Unlike smooth endoplasmic reticulum, rough endoplasmic reticulum has attached to it.
19. The cell takes in food and water and eliminates wastes through its selectively permeable .
20.Some materials can move across the cell membrane against a concentration gradient by .
21. The levels of organization in a multicellular organism listed from simplest to most complicated are , tissues, , and organ systems.
Short Answer
In complete sentences, write the answers to the questions on the lines provided.
22. What does the cell theory say?
23. How do prokaryotes and eukaryotes differ?
24. List two functions of the cytoskeleton.
Figure 7–3
25. Which structures in the cells shown in Figure 7–3 above are responsible for meeting the cells’ energy needs? Based on the presence or absence of these structures, identify which cell is a plant cell.
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26. Define diffusion.
27. How are endocytosis and exocytosis similar? How are they different?
Using Science Skills
Use the diagram below to answer the following questions on the lines provided.
Figure 7–4
28.Interpret Visuals Which drawing in Figure 7–4, I or II, contains structures that carry out photosynthesis? What is this structure labeled in the diagram?
29.Interpret Visuals Which organelle is labeled K in Figure 7–4? What is the function of this organelle?
30.Interpret Visuals Do the drawings in Figure 7–4 represent prokaryotes or eukaryotes? How do you know?
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