Bio 6A/C - DNA Components and Changes/Mutations (Part I - Ch. 6 HOLT Biology)
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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Binary fission a. | occurs when two cells collide with each
other. | b. | produces excess energy. | c. | creates new
species. | d. | is the process by which bacteria
reproduce. | | |
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2.
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The
chromosome of a bacterium a. | is wrapped around proteins. | b. | has a circular
shape. | c. | occurs in multiple pairs within the
cell. | d. | is found within the nucleus. | | |
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3.
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In a
bacterium, cell division takes place when a. | its nucleus divides. | b. | the cell splits
into two cells, one of which receives all of the DNA. | c. | the DNA is
copied, a new cell wall forms between the DNA copies, and the cell splits into two
cells. | d. | None of the above | | |
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4.
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The
point at which two chromatids are attached to each other in a chromosome is called
a(n) a. | chloroplast. | c. | gamete. | b. | centromere. | d. | centriole. | | | | |
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5.
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Chromatids are a. | dense patches within the nucleus. | b. | bacterial
chromosomes. | c. | joined strands of duplicated genetic
material. | d. | prokaryotic nuclei. | | |
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6.
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The
chromosomes in your body a. | exist in 23 pairs in all cells but
gametes. | b. | each contain thousands of genes. | c. | form right
before cells divide. | d. | All of the above | | |
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7.
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How
many chromosomes are in the body cells of an organism that has a haploid number of
8?
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8.
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The
diploid number of chromosomes in a human skin cell is 46. The number of chromosomes found in a human
ovum is
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9.
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diploid : somatic cell :: haploid : a. | body
cell | c. | gamete | b. | chromosome | d. | zygote | | | | |
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10.
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A
student can study a karyotype to learn about the a. | cell cycle. | b. | genes that are
present in a particular strand of DNA. | c. | medical history of an individual. | d. | number and
structure of the chromosomes in a somatic cell. | | |
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11.
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The
stage of the cell cycle that occupies most of the cell’s life is
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12.
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Mitosis is the process by which a. | microtubules are assembled. | b. | cytoplasm is
divided. | c. | the nucleus is divided into two
nuclei. | d. | the cell rests. | | |
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13.
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At
the DNA synthesis (G2) checkpoint, DNA replication is checked by a. | receptor
proteins. | c. | repair
enzymes. | b. | electron transport chains. | d. | cell surface markers. | | | | |
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14.
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The
cell cycle is monitored as each cell passes through a. | cellular
respiration. | c. | photosynthesis. | b. | checkpoints. | d. | homeostasis. | | | | |
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15.
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The
phase of mitosis that is characterized by the arrangement of all chromosomes along the equator of the
cell is called a. | telophase. | c. | anaphase. | b. | metaphase. | d. | prophase. | | | | |
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16.
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As a
result of mitosis, each of the two new cells produced from the parent cell during
cytokinesis a. | receives a few
chromosomes from the parent cell. | b. | receives an exact copy of all the chromosomes present in the
parent cell. | c. | donates a chromosome to the parent
cell. | d. | receives exactly half the chromosomes from the parent
cell. | | |
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17.
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Refer
to the illustration above. The cell in diagram 1 is in a. | metaphase. | c. | anaphase. | b. | telophase. | d. | prophase. | | | | |
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18.
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Refer
to the illustration above. Mitosis begins with the stage shown in diagram
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19.
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Mitosis is a process by which a. | DNA is replicated. | c. | cells grow in size. | b. | cytokinesis
occurs. | d. | a cell’s
nucleus divides. | | | | |
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20.
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Which
of the following statements is true? a. | Prokaryotes divide by mitosis. | b. | Eukaryotes have
circular chromosomes. | c. | Animal cells form new cell walls when they
divide. | d. | Plant cells and animal cells have different strategies for
cytokinesis. | | |
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