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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The organelles associated with plant photosynthesis are the
a) | mitochondria. | c) | Golgi apparatus. | b) | chloroplasts. | d) | vacuoles. |
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2
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Molecules that are too large to be moved through the membrane can be transported
into the cell by
a) | diffusion. | c) | exocytosis. | b) | osmosis. | d) | endocytosis. |
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3
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The diffusion of water into or out of a cell is called
a) | endocytosis. | c) | osmosis. | b) | selective transport. | d) | solubility. |
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4
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All the following are found in both plant and animal cells, except
a) | endoplasmic reticulum. | c) | a cell membrane. | b) | a cell wall. | d) | mitochondria. |
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5
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By what process does water exit a cell through the plasma membrane?
a) | Exocytosis | c) | Facilitated diffusion | b) | Active
transport | d) | Osmosis |
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6
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In a cell, proteins are made on the
a) | cell membrane. | c) | ribosomes. | b) | mitochondria. | d) | nucleus. |
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7
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One important organelle that helps maintain homeostasis by moving substances
from one part of the cell to another is the
a) | endoplasmic reticulum. | c) | cytoplasm. | b) | Golgi apparatus. | d) | mitochondrion. |
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8
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Which type of molecule forms a lipid bilayer within a cell membrane?
a) | phospholipid | c) | carbohydrate | b) | protein | d) | nucleic acid |
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9
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In active transport, carrier proteins
a) | move small molecules through the cell membrane by osmosis. | c) | move substances
from low concentration to high concentration by diffusion. | b) | move substances
across the cell membrane without the use of ATP. | d) | move substances from a low concentration to
high concentration through the use of energy. |
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10
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Refer to the illustration above. The structure labeled B in the diagram is an
example of a
a) | marker protein. | c) | receptor protein. | b) | channel protein. | d) | phospholipid |
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11
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Refer to the illustration above. The structure labeled A is most likely a
a) | chromosome. | c) | DNA molecule. | b) | marker protein. | d) | signal
molecule. |
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12
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A structure within a eukaryotic cell that performs a specific function is called
a(n)
a) | biocenter. | c) | tissue. | b) | organ tissue. | d) | organelle. |
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13
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Refer to the illustration above. The structure labeled A is composed of
a) | phospholipids. | c) | carbohydrates. | b) | proteins. | d) | nucliec acids |
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14
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Refer to the illustration above. Structure C is a
a) | channel protein | c) | phospholipid | b) | marker protein | d) | receptor
protein |
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15
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Refer to the illustration above. The structure that acts as a gate to the
cell’s interior is labeled
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16
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Diffusion occurs because
a) | molecules constantly move and collide with each other. | b) | the concentration of
a solution is always the same throughout a solution. | c) | the concentration of a solution is never the
same throughout a solution. | d) | molecules never move or collide with each
other. |
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17
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A cell that requires a lot of energy might contain large numbers of
a) | lysosomes. | c) | chromosomes. | b) | mitochondria. | d) | vacuoles. |
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18
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Red blood cells have a salt content of 0.9%. When a microbiologist places red
blood cells in a solution that has a salt content of 1.2%, osmosis occurs. What net movement of a
substance occurs in this instance of osmosis?
a) | Water molecules move out ofthe cells. | c) | Salt ions move out ofthe
cells. | b) | Salt ions move into the cells.
| d) | Water molecules move into the
cells. |
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19
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Which phrase describes the function of the mitochondria?
a) | supplies energy to the cell | c) | breaks down
chemicals | b) | fluid-filled sac used for storage | d) | packages
proteins |
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20
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Elongated proteins on the surface of a cell and that identify the cell are
called
a) | marker proteins. | c) | enzymes. | b) | receptor proteins. | d) | channel
proteins. |
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21
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Which of the following is an example of a prokaryotic cell?
a) | liver cell | c) | virus | b) | bacterium | d) | amoeba |
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22
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The packaging and distribution center of the cell is the
a) | nucleus. | c) | nuclear envelope. | b) | central vacuole. | d) | Golgi
apparatus. |
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23
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Two cells are shown in the diagrams below. Which statement correctly identifies
the cells? a) | Cell 1 is eukaryotic; cell 2 is prokaryotic. | c) | Cell 1 is prokaryotic; cell 2 is
eukaryotic. | b) | Both cells are eukaryotic. | d) | Both cells are prokaryotic. |
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24
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Which best explains why a bacterial cell is classified as a
prokaryote?
a) | the absence of a nucleus | c) | the absence of a cell
wall | b) | the presence of a cell wall | d) | the presence of a nucleus |
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25
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Plant cells have a large membrane-bound space in which water, waste products,
and nutrients can be stored. This space is called the
a) | Golgi apparatus. | c) | vacuole. | b) | chloroplast. | d) | mitochondrion. |
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26
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Proteins that act like selective passageways in the cell membrane are known
as
a) | marker proteins. | c) | receptor proteins. | b) | channel proteins. | d) | phospholipids |
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27
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Viruses, bacteria, and old organelles that a cell wants to get rid of are broken
down in
a) | lysosomes | c) | ribosomes | b) | rough ER | d) | mitochondria |
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28
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What is the primary function of DNA in organisms?
a) | binds to specific active sites | c) | transports amino acids to the
ribosomes | b) | stores genetic information | d) | produces chromosomes for sexual reproduction |
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29
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Which of the following does not require energy?
a) | endocytosis | c) | diffusion | b) | active transport | d) | sodium-potassium
pump |
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30
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A cell will swell when it is placed in a(n)
a) | isotonic solution. | c) | hypertonic solution. | b) | hypotonic solution. | d) | mesotonic
solution |
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