Multiple Choice (3 pts. each)
Identify the choice that best completes the statement or answers
the question.
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1.
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Which of the following statements about the nucleus is NOT true?
A) | The nucleus stores the coded instructions for making the cell’s
proteins. | B) | The nucleus usually contains a nucleolus region which is where ribosome assembly
begins. | C) | The nucleus is the site of protein assembly. | D) | The nucleus is
surrounded by a nuclear envelope that lets materials in and out. |
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2.
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Which sequence correctly traces the path of a protein in the cell?
A) | ribosome, endoplasmic reticulum, Golgi apparatus | B) | ribosome,
endoplasmic reticulum, chloroplast | C) | endoplasmic reticulum, lysosome, Golgi
apparatus | D) | ribosome, Golgi apparatus, endoplasmic reticulum |
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3.
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The diffusion of water across a selectively permeable membrane is called
A) | osmotic pressure. | B) | osmosis. | C) | pinocytosis. | D) | active
transport. |
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 Figure
7–5
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4.
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Which means of particle transport is shown in Figure 7–5 above?
A) | endocytosis | B) | exocytosis | C) | facilitated
diffusion | D) | protein pump |
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5.
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Which organelle breaks down organelles that are no longer useful?
A) | Golgi apparatus | B) | lysosome | C) | endoplasmic
reticulum | D) | mitochondrion |
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6.
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Which means of particle transport is shown in Figure 7–4 above?
A) | diffusion | B) | osmosis | C) | facilitated
diffusion | D) | active transport |
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7.
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Which organelle converts the chemical energy stored in food into compounds that
are more convenient for the cell to use?
A) | chloroplast | B) | Golgi apparatus | C) | endoplasmic
reticulum | D) | mitochondrion |
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8.
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Diffusion occurs because
A) | molecules are attracted to one another. | B) | molecules constantly
move and collide with each other. | C) | cellular energy forces molecules to collide
with each other. | D) | cellular energy pumps molecules across the cell
membrane. |
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9.
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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. |
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10.
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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. |
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11.
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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 |
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12.
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The cells of unicellular organisms are
A) | specialized to perform different tasks. | B) | larger than those of
multicellular organisms. | C) | able to carry out all of the functions
necessary for life. | D) | unable to respond to changes in their
environment. |
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13.
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Not all cells are alike. Which of the following is NOT a true statement about
differences between cells?
A) | Cells come in many different shapes. | B) | Different kinds of cells are different sizes.
| C) | Some cells have a nucleus, but others do not. | D) | Most cells have a
membrane, but some do not. |
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14.
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You will NOT find a cell wall in which of these kinds of organisms?
A) | plants | B) | animals | C) | fungi | D) | bacteria |
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15.
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Which of the following best describes the relationship between the nucleus and
the cytoplasm?
A) | The cytoplasm is a fluid that fills the inside of the nucleus. | B) | The cytoplasm is an
organelle that is usually found near the nucleus. | C) | The nucleus is an organelle that is surrounded
by the cytoplasm. | D) | The nucleus is a fluid and it mixes with the
fluid cytoplasm. |
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16.
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Which of the following is an example of an organ?
A) | heart | B) | epithelial tissue | C) | digestive
system | D) | nerve cell |
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17.
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An animal cell that is surrounded by fresh water will burst because the osmotic
pressure causes
A) | water to move into the cell. | B) | water to move out of the
cell. | C) | solutes to move into the cell. | D) | solutes to move out of the
cell. |
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18.
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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 the movement of materials into and out of the
cell |
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19.
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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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20.
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Which organelle would you expect to find in plant cells but not animal
cells?
A) | mitochondrion | B) | ribosome | C) | chloroplast | D) | smooth endoplasmic
reticulum |
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21.
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Unlike the cell membrane, the cell wall is
A) | found in all organisms. | B) | composed of a lipid
bilayer. | C) | selectively permeable. | D) | a rigid
structure. |
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22.
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Which of the following activities is NOT a way that unicellular organisms
maintain homeostasis?
A) | reproduction | B) | growth | C) | cell
specialization | D) | response to the environment |
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23.
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Which of the following is a function of the nucleus?
A) | stores DNA | B) | stores sugars | C) | builds
proteins | D) | packages proteins |
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24.
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Which list represents the levels of organization in a multicellular organism
from the simplest level to the most complex level?
A) | cell, tissue, organ system, organ | B) | organ system, organ, tissue,
cell | C) | tissue, organ, organ system, cell | D) | cell, tissue, organ, organ
system |
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25.
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Which term describes the relatively constant internal physical conditions of an
organism?
A) | cell specialization | B) | homeostasis | C) | organ
system | D) | unicellularity |
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26.
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Electron microscopes can reveal details
A) | only in specimens that are still alive. | B) | about the different
colors of cell structures. | C) | of cell structures only once they are
stained. | D) | 1000 times smaller than those visible in light
microscopes. |
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27.
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Which of the following enclose their DNA in a nucleus?
A) | prokaryotes | B) | bacteria | C) | eukaryotes | D) | viruses |
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28.
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Looking at a cell under a microscope, you note that it is a prokaryote. How do
you know?
A) | The cell lacks cytoplasm. | B) | The cell lacks a cell
membrane. | C) | The cell lacks a nucleus. | D) | The cell lacks genetic
material. |
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29.
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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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Short Answer
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Figure
7–7
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30.
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Identify each of the cell structures indicated in Figure 7–7. Use these
terms: nucleus, mitochondrion, ribosome, cell membrane, smooth endoplasmic reticulum, rough
endoplasmic reticulum, nucleolus, Golgi apparatus, cytoplasm. (1/2 point each)
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31.
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What would happen to an animal cell with an internal salt concentration of 0.8%
if it were placed in a salt solution with a concentration of 0.2%? Why? (3
points)
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32.
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In a far away city called Grant
City, the main export and production product is the steel widget. Everyone in the town has something to do
with steel widget making and the entire town is designed to build and export widgets. The town
hall has the instructions for widget making, widgets come in all shapes and sizes and any citizen
of Grant can get the instructions and begin making their own widgets. Widgets are generally produced
in small shops around the city, these small shops can be built by the carpenter's
union (whose headquarters are in town hall).
After the widget is constructed, they are placed
on special carts which can deliver the widget anywhere in the city. In order for a widget to
be exported, the carts take the widget to the postal office, where the widgets are packaged
and labeled for export. Sometimes widgets don't turn out right, and the "rejects" are
sent to the scrap yard where they are broken down for parts or destroyed altogether. The town
powers the widget shops and carts from a hydraulic dam that is in the city. The entire city is
enclosed by a large wooden fence, only the postal trucks (and citizens with proper passports)
are allowed outside the city.
Match the parts of the city (underlined) with the parts of the
cell. (1/2 point.each)
| 1. Nucleus | _____________________________________________ | | 2. Ribosomes
| _____________________________________________ | | 3.Mitochondria
| _____________________________________________ | | 4. Endoplasmic
Reticulum | _____________________________________________ | | 5. Nucleolus
| _____________________________________________ | | 6. Lysosomes
| _____________________________________________ | | 7. Cell Membrane
| _____________________________________________ | | 8. Protein
| _____________________________________________ | | 9. Golgi
Apparatus | _____________________________________________ | | |
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Bonus
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33.
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How should a microscope be stored?
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