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
structure that forms the outer boundary in living cells is the a. | cell membrane | c. | nuclear membrane | b. | cell wall | d. | vacuole | | | | |
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2.
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Which
of the following is not a component of the cell theory? a. | living organisms do not depend on their individual cells
for support | c. | The cell is the basic functional unit of all
organisms | b. | All living things are made of at least one
cell. | d. | All cells come from previously existing
cells | | | | |
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Use
the following diagram to answer the next three questions.
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3.
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Name
the type of cells shown in this diagram a. | animal cells | c. | plant cells | b. | bacterial cells | d. | none of the above | | | | |
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4.
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How
can you tell whether these are plant or animal cells? a. | the fact that they are reproducing
| c. | the presence of a nucleus | b. | their
shape. | d. | none of the above | | | | |
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5.
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Examine the cells that are circled, close to the centre of the diagram. What is
happening? a. | Nucleus and
nuclear membrane have disappeared. | c. | Spindle fibres
are pulling centromeres apart. | b. | Spindle fibres are pulling double-stranded chromosomes
across the middle of the cell. | d. | Nuclear membrane is reforming.
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6.
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In
which phase of mitosis does the nuclear membrane get disassembled? a. | prophase | c. | anaphase | b. | metaphase | d. | telophase | | | | |
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7.
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In
which phase of mitosis do the spindle fibres form? a. | prophase | c. | anaphase | b. | metaphase | d. | telophase | | | | |
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8.
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In
which phase of mitosis are the chromosomes pulled into a line across the middle of the
cell? a. | prophase | c. | anaphase | b. | metaphase | d. | telophase | | | | |
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9.
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In
which phase of mitosis are the chromosomes moving to opposite ends of the cell? a. | prophase | c. | anaphase | b. | metaphase | d. | telophase | | | | |
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10.
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In
which phase of mitosis does the nuclear membrane reform? a. | prophase | c. | anaphase | b. | metaphase | d. | telophase | | | | |
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11.
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In
which phase of the cell cycle is the cell's DNA duplicated? a. | interphase | c. | cytokinesis | b. | mitosis | d. | none of the above | | | | |
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12.
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How is
the cell cycle changed during growth? a. | its rate increases | b. | its rate decreases | c. | its rate does not change. | | |
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13.
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How is
the cell cycle changed by aging? a. | its rate increases | c. | its rate does not change | b. | its rate decreases | | | | |
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14.
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What
is the name of the disease caused by cells dividing too quickly? a. | tuberculosis | c. | meningitis | b. | emphysema | d. | cancer | | | | |
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15.
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Which
of the following is NOT true of asexual reproduction? a. | The offspring are identical to the
parent | c. | There are two
parents | b. | One type is
called budding | d. | None of the above. | | | | |
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16.
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Which
of the following is NOT true of sexual reproduction? a. | It increases genetic variation
| c. | There are two parents | b. | Offspring are identical to their
parents | d. | None of the above | | | | |
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17.
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Cancer
cells are dangerous because: a. | They use valuable nutrients that are intended for the
normal growth of cells in the area | c. | They cannot do
the various jobs of other cells around them | b. | |
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