True/False
Indicate whether the
statement is true or false.
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1.
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The longest stage of a cell’s cycle is interphase.
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2.
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Chromosomes first appear in a cell during telophase.
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3.
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Chromosomes first appear in a cell during prophase.
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4.
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Chromosomes are made of DNA.
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5.
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Chromatin is made of DNA.
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Multiple Choice
Identify the
choice that best completes the statement or answers the question.
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6.
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During what stage of the cell cycle does DNA replication occur?
a. | interphase | b. | cytokinesis | c. | prophase | d. | mitosis |
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7.
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Before a cell can divide it must make a copy of its
a. | organelles | b. | chromosomes | c. | DNA | d. | two daughter
cells |
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8.
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What are chromatids?
a. | the two halfs of a chromosome that separate during mitosis | b. | identical daughter
cells | c. | chromatin | d. | pigments that absorb the energy in
sunlight |
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9.
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What forms around the chromatids during telophase of mitosis?
a. | two new chromosomes | b. | two new nuclei | c. | two new
cells | d. | two new DNA molecules |
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10.
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The 3rd stage of the cell cycle that follows mitosis is called
a. | interphase. | b. | metaphase. | c. | cytokinesis. | d. | telophase. |
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11.
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The whole life cycle of growth and division that cells undergo is called
a. | replication. | b. | the cell cycle. | c. | interphase. | d. | mitosis. |
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12.
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A DNA molecule is shaped like a
a. | long, thin rod. | b. | a double helix much like a twisted
ladder. | c. | straight ladder. | d. | triple helix. |
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13.
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During DNA replication, adenine (A) always pairs with
a. | guanine (G). | b. | cytosine (C). | c. | thymine
(T). | d. | adenine (A). |
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14.
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Each rung or step of the DNA ladder is made of
a. | a single nitrogen base. | b. | a pair of nitrogen bases. | c. | three nitrogen
bases. | d. | four nitrogen bases. |
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15.
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The instructions that determine how a cell will differentiate are coded
a. | in the DNA in the cell’s nucleus. | b. | in the cell’s
cytoplasm. | c. | in stem cells. | d. | in the cell’s
mitochondria. |
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16.
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Which of the following is TRUE about the structure of DNA?
a. | Scientists do not know the structure of DNA. | b. | DNA is wound tightly
around proteins that support the structure of the chromosome. | c. | Adenine pairs with
cytosine and thymine pairs with guanine. | d. | The molecules of DNA that result from
replication are different from the original molecule of DNA. |
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17.
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The sides of the DNA molecule are made of
a. | glucose | c. | nitrogen bases | b. | deoxyribose sugar and
phosphate | d. | adenine and
cytosine |
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18.
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The rungs or steps of the DNA ladder are made of
a. | glucose | c. | nitrogen bases | b. | deoxyribose sugar and
phosphate | d. | thymine and
Gganine |
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19.
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The function of DNA is
a. | to carry information out of the cell | c. | identify people | b. | provide the
instructions for the life of a cell. | d. | not known |
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Modified True/False
Indicate
whether the statement is true or false.
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20.
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A cell makes a copy of its DNA during the stage of the cell cycle called
mitosis.
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21.
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In a DNA molecule, guanine(G) always pairs with thymine(T).
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