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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Cells
containing two alleles for each trait are described as _____. a. | gametes | c. | haploid | b. | diploid | d. | homozygous | | | | |
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2.
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Pollination can best be described as _____. a. | the fusing of
the egg nucleus with the pollen nucleus | b. | the transfer of the male pollen grain to the female
organ | c. | the formation of male and female sex
cells | d. | the type of cell division that produces diploid
gametes | | |
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3.
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Among
the following, the term that includes the others is _____. a. | nuclear
division | c. | interphase | b. | mitosis | d. | cell cycle | | | | |
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4.
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Unlike plant cells, animal cells contain _____. a. | cell
walls | c. | centrioles | b. | spindles | d. | nucleoli | | | | |
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5.
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By
the end of prophase, each of the following has occurred except _____. a. | lining up of
chromosomes in the cell | c. | breaking down of
the nuclear envelope | b. | tighter coiling of the
chromosomes | d. | disappearing of
the nucleolus | | | | |
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6.
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Using
Figure 12-3, which process would result in the formation of chromosome C from chromosomes A and
B? a. | segregation | c. | asexual
reproduction | b. | independent assortment | d. | crossing over | | | | |
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7.
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The
longest phase of the cell cycle is _____. a. | mitosis | c. | metaphase | b. | interphase | d. | prophase | | | | |
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8.
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Which
of the following monitors a cell's progress from phase to phase during the cell
cycle? a. | lipid
molecules | c. | a series of
enzymes | b. | protein molecules | d. | microtubules | | | | |
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9.
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A
gene is a segment of DNA that controls the production of _____. a. | proteins | c. | carbohydrates | b. | microtubules | d. | centromeres | | | | |
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10.
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Tangled strands of DNA wrapped around protein molecules make up the
_____. a. | microtubules | c. | chromatin | b. | nuclear envelope | d. | spindle | | | | |
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11.
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As
the size of a cell increases, _____. a. | volume increases and surface area
decreases | b. | surface area increases faster than
volume | c. | volume and surface area increase at the same
rate | d. | volume increases
faster than surface area | | |
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12.
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The
gamete that contains genes contributed only by the mother is _____. a. | the
sperm | c. | a
zygote | b. | an egg | d. | dominant | | | | |
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13.
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The
passing on of traits from parents to offspring is called _____. a. | genetics | c. | heredity | b. | inbreeding | d. | gene splicing | | | | |
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14.
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The
numbers in Figure 12-1 represent the chromosome number found in each of the dog cells shown. The
processes that are occurring at A and B are _____. a. | mitosis and
pollination | c. | meiosis and
pollination | b. | mitosis and fertilization | d. | meiosis and fertilization | | | | |
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15.
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Which
of the following explains why a cell's size is limited? a. | Volume increases
faster than surface area. | b. | Surface area increases faster than
volume. | c. | Homeostasis is disrupted by a cell that is too
large. | d. | both a and c | | |
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