Multiple Choice
Identify the
letter of the choice that best completes the statement or answers the question.
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| 1. | Who
was the first person to identify and see cells? a. | Anton van Leeuwenhoek | b. | Robert
Hooke | c. | Matthias Schleiden | d. | Rudolf
Virchow | | |
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| 2. | The
work of Schleiden and Schwann can be summarized by saying that a. | all plants are
made of cells. | b. | all animals are made of cells. | c. | plants and
animals have specialized cells. | d. | all plants and animals are made of
cells. | | |
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| 3. | 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
reproduce. | d. | All cells are produced by existing
cells. | | |
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| 4. | The
cell theory applies to a. | bacteria. | b. | plants and
animals. | c. | multicellular organisms. | d. | all of the
above | | |
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Figure
7-1
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| 5. | The
structure labeled I in Figure 7-1 is a thin, flexible barrier around a cell. It is called
the a. | cell
membrane. | b. | cell wall. | c. | cell
envelope. | d. | cytoplasm. | | |
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| 6. | Which
cell structure contains the cell's genetic material and controls the cell's
activities? a. | organelle | b. | nucleus | c. | cell
envelope | d. | cytoplasm | | |
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| 7. | Prokaryotes lack a. | cytoplasm. | b. | a cell
membrane. | c. | a nucleus. | d. | genetic
material. | | |
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| 8. | Which
of the following contains a nucleus? a. | prokaryotes | b. | bacteria | c. | eukaryotes | d. | organelles | | |
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| 9. | The
main function of the cell wall is to a. | support and protect the cell. | b. | store
DNA. | c. | direct the
activities of the cell. | d. | help the cell move. | | |
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| 10. | Unlike the cell membrane, the cell wall is a. | found in all
organisms. | b. | composed of a lipid bilayer. | c. | a flexible
barrier. | d. | made of tough fibers. | | |
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| 11. | Which
of the following is a function of the nucleus? a. | stores DNA | b. | controls most of
the cell's processes | c. | contains the information needed to make
proteins | d. | all of the above | | |
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| 12. | Which
of the following is NOT found in the nucleus? a. | cytoplasm | b. | nucleolus | c. | chromatin | d. | DNA | | |
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| 13. | Which
of the following is a function of the cytoskeleton? a. | helps a cell
keep its shape | b. | contains DNA | c. | surrounds the
cell | d. | helps make
proteins | | |
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| 14. | Which
structures carry out cell movement? a. | cytoplasm and ribosomes | b. | nucleolus and
nucleus | c. | microtubules and microfilaments | d. | chromosomes | | |
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| 15. | Which
of the following is an organelle found in the cytoplasm? a. | nucleolus | b. | ribosome | c. | chromatin | d. | cell wall | | |
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| 16. | Which
organelle breaks down food into particles the cell can use? a. | Golgi
apparatus | b. | lysosome | c. | endoplasmic
reticulum | d. | mitochondrion | | |
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| 17. | Which
organelle makes proteins using coded instructions that come from the nucleus? a. | Golgi
apparatus | b. | mitochondrion | c. | vacuole | d. | ribosome | | |
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| 18. | Which
organelle converts food into compounds that the cell uses for growth, development, and
movement? a. | chloroplast | b. | Golgi apparatus | c. | endoplasmic
reticulum | d. | mitochondrion | | |
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| 19. | Which
organelles help provide cells with energy? a. | mitochondria and chloroplasts | b. | rough
endoplasmic reticulum | c. | smooth endoplasmic reticulum | d. | Golgi apparatus
and ribosomes | | |
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| 20. | Which
organelle would you expect to find in plant cells? a. | mitochondrion | b. | ribosome | c. | chloroplast | d. | smooth endoplasmic reticulum | | |
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| 21. | Which
of the following structures serves as the cell's boundary from its environment? a. | mitochondrion | b. | cell membrane | c. | chloroplast | d. | channel proteins | | |
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| 22. | Which
of the following is a function of the cell membrane? a. | breaks down
lipids, carbohydrates, and proteins from foods | b. | stores water,
salt, proteins, and carbohydrates | c. | keeps the cell wall in place | d. | regulates which
materials enter and leave the cell | | |
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| 23. | The
cell membrane contains channels and pumps that help move materials from one side to the other. What
are these channels and pumps made of? a. | carbohydrates | b. | lipids | c. | bilipids | d. | proteins | | |
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| 24. | Diffusion is the movement of molecules from a. | an area of low
concentration to an area of high concentration. | b. | an area of high
concentration to an area of low concentration. | c. | an area of
equilibrium to an area of high concentration. | d. | all of the
above | | |
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| 25. | Diffusion occurs because a. | molecules constantly move and collide with each
other. | b. | the concentration of a solution is never the same throughout a
solution. | c. | the concentration of a solution is always the same throughout a
solution. | d. | molecules never move or collide with each
other. | | |
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| 26. | 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. | move across the
membrane in both directions. | d. | move across the membrane to the inside of the
cell. | | |
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| 27. | The
diffusion of water across a selectively permeable membrane is called a. | osmotic
pressure. | b. | osmosis. | c. | facilitated
diffusion. | d. | active transport. | | |
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| 28. | Which
term refers to cells having different jobs in an organism? a. | multicellular | b. | cell specialization | c. | levels of
organization | d. | unicellular | | |
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| 29. | The
cells of multicellular organisms are a. | smaller than those of unicellular
organisms. | b. | simpler than those of unicellular
organisms. | c. | specialized to perform particular
functions. | d. | not dependent on one another. | | |
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| 30. | All
of the following are types of tissues EXCEPT a. | muscle. | b. | connective. | c. | digestive. | d. | nerve. | | |
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