Multiple Choice
Identify the
letter of the choice that best completes the statement or answers the question.
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1.
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Which
of the following organisms do not have cell walls? a. | plants | c. | bacteria | b. | fungi | d. | animals | | | | |
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2.
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Which
of the following is NOT true of plasma membranes? a. | Folded membranes increase surface area for
efficiency. | b. | Folded membranes do not form compartments in the
cell. | c. | Endoplasmic reticulum is made up of folded
membranes. | d. | Ribosomes are sometimes attached to folded
membranes. | | |
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3.
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Folded membranes are an advantage to a cell because _____. a. | cell processes
can be more efficient | b. | the membranes provide a large surface
area | c. | the membranes
form interconnected compartments | d. | all of these | | |
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4.
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Who
concluded that all plants are made of living cells? a. | Virchow | c. | Schwann | b. | Hooke | d. | Schleiden | | | | |
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5.
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All
living things are made up of _____. a. | cells | c. | wastes | b. | cork | d. | cellulose | | | | |
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6.
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What
do electron microscopes use to focus and magnify an image? a. | glass
lenses | c. | electron
beams | b. | X rays | d. | light | | | | |
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7.
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Each
of the following is a main idea of the cell theory except _____. a. | all organisms
are composed of cells | b. | the cell is the basic unit of organization of
organisms | c. | all cells are similar in structure and
function | d. | all cells come from preexisting cells | | |
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8.
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The
scientist who first described living cells as seen through a simple microscope was
_____. a. | van
Leeuwenhoek | c. | Hooke | b. | Schleiden | d. | Schwann | | | | |
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9.
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One
advantage of electron microscopes over light microscopes is their _____. a. | size | c. | two-dimensional
image | b. | higher magnification | d. | use of live specimens | | | | |
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10.
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If a
cell contains a nucleus, it must be a(n) _____. a. | plant cell | c. | animal cell | b. | eukaryotic
cell | d. | prokaryotic
cell | | | | |
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11.
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In a
chloroplast, the stacks of membranous sacs are called _____. a. | stroma | c. | plastids | b. | grana | d. | thylakoid membrane | | | | |
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12.
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Because cells have a watery environment both inside and outside, the polar ends of the
phospholipids in the plasma membrane form ____ layers a. | several | c. | double | b. | mosaic | d. | single | | | | |
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13.
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The
fluid mosaic model describes a structure with ____. a. | polar layers on
the outside and nonpolar layer on the inside | b. | nonpolar layers
on the outside and a polar layer on the inside | c. | polar layers on
both inside and outside | d. | nonpolar layers on both inside and
outside | | |
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14.
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Because the phospholipid molecules and some proteins are free to move, the plasma
membrane is said to be a ____. a. | bilayer | c. | fluid mosaic | b. | solid | d. | fatty
acid | | | | |
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15.
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Which
of the following might be a result of a disease that causes a thickened plasma
membrane? a. | increased
movement of molecules entering the cell | b. | decreased movement of molecules within the
cell | c. | decreased
movement of molecules entering the cell | d. | increased movement of molecules leaving the
cell | | |
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16.
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A
cell's contents would be the same as its surrounds, were it not for ____. a. | plasmolysis | c. | phagocytosis | b. | selective permeability | d. | dynamic equilibrium | | | | |
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17.
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A
plasma membrane is made up of a(n) _____. a. | cholesterol layer | c. | lipid bilayer | b. | enzyme
bilayer | d. | protein
layer | | | | |
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18.
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Which
is not a way that Figure 7-2 is a model of cellular theory?
Figure
7-2 a. | bricks are small
units in a building | b. | bricks are solid | c. | there are many
bricks in a building | d. | bricks are organized to make a larger
unit | | |
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Figure 7-3
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19.
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What
is the approximate size of A in Figure 7-3? a. | 400 mm | c. | 700 mm | b. | 500 mm | d. | 1000 mm | | | | |
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20.
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What
is the approximate size of B in figure 7-3? a. | 400 mm | c. | 700 mm | b. | 500 mm | d. | 1000 mm | | | | |
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21.
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What
would be the best way to estimate the size of C in Figure 7-3? a. | increase
magnification | c. | estimate by what
you can see | b. | decrease magnification | d. | assume it is 2000 mm | | | | |
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Figure 7-4
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22.
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What
would happen to the structure in Figure 7-4 if part D is completely removed? a. | it would become
solid | c. | it would have
holes in it | b. | it would disintegrate | d. | it would collapse in on itself | | | | |
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23.
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What
structure is analogous to a sewage system?
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24.
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Where
are you least likely to find water in the structure shown in Figure 7-4
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25.
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Which
of the following pictures in Figure 7-5 most likely approximate the motion phospholipids make in a
plasma membrane?
Figure 7-5
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Figure 7-6
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26.
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Which
structure in Figure 7-6 is the cell control center?
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27.
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Which
structure in Figure 7-6 maintains homeostasis?
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28.
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Which
structure in Figure 7-6 is responsible for chemical reactions?
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29.
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Which
structure in Figure 7-6 transforms energy?
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30.
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Which
structure in Figure 7-6 sorts and transports?
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31.
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Which
parts of Figure 7-6 are in a prokaryotic cell? a. | D and M | c. | C and J | b. | A and
K | d. | G and
L | | | | |
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32.
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A
cell contains the structure shown in Figure 7-7. What other cell structure that is not found in all
eukaryotic cells is likely to be found in this cell?
Figure 7-7 a. | mitochondria | c. | cell wall | b. | ribosomes | d. | plasma
membrane | | | | |
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