The following graph shows the number of insects present on a field after it has been sprayed with the same insecticide once per year over four years. What is the most reasonable hypothesis for the increase in insects in year four? (SC.912.N.1.1)
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1 point
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The insecticide used in year four was stronger than it was in previous years
The insects in the field in year four were the same species as in previous years
The population of insects resistant to the insecticide had increased over the four years
Insects for from a neighboring field had moved into the area before the insecticide was applied in year four
3. Mitosis and meiosis are processes involved in cellular reproduction. Which of the following describes and event that results from mitosis but NOT meiosis?(SC.912.L.16.17)
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1 point
two stages of cell division
replication of cellular genetic material
daughter cells that are identical to the parent cell
four daughter cells that are produced from each parent cell
4. Which of the following phases of mitosis is represented by the diagram below? (SC.912.L.16.17)
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1 point
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prophase
metaphase
anaphase
telophase
5. The following diagrams show four stages of a cell dividing by mitosis. Which list of numbers names the diagrams in the correct sequence as they occur in the cell cycle? (SC.912.L.16.17)
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1 point
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1, 3, 4, 2
2, 1, 3, 4
2, 4, 3, 1
4, 3, 2, 1
6. During meiosis, homologous chromosomes line up next to each other. If one arm of a chromatid crosses over the arm of another chromatid, what results? (SC.912.L.16.17)
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1 point
the creation of an additional sex cell
the independent assortment of genetic material
a possible change in the offspring cell’s functionality
additional variation in the DNA combination of each sex cell formed
7. A cheetah is a multicellular organism. A paramecium is a unicellular organism. How do these two organisms differ in terms of how they produce offspring? (SC.912.L.16.17)
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1 point
The cheetah uses sexual reproduction, while the paramecium uses meiosis.
The cheetah uses binary fission, while the paramecium uses sexual reproduction.
The cheetah uses asexual reproduction, while the paramecium uses binary fission.
The cheetah uses sexual reproduction, while the paramecium uses asexual reproduction.
8. The diagram below shows two strawberry plants. Plant 2 is produced asexually from Plant 1. If the leaf cells of Plant 1 have 56 chromosomes, how many chromosomes will be found in the leaf cells of Plant 2? (SC.912.L.16.17)
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1 point
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14
28
56
112
9. Asexual reproduction increases genetic variation in a population. Which is a way that meiosis and fertilization lead to genetic variation? (SC.912.L.16.17)
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1 point
Alleles are recombined when gametes from different parents join together.
Mutations are usually repaired by cellular machinery before genes are expressed.
DNA is replicated when a fertilized egg becomes a growing embryo through mitosis.
Parents that are homozygous dominant for the same trait will have offspring that are also homozygous dominant for that trait
10. Which of the following phrases best describes cancer? (SC.912.L.16.17)
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1 point
absence of cyclins in the DNA
multiple gene mutations on a chromosome of DNA
uncontrolled cell growth caused by mutations in genes that control the cell cycle
presence of genetic defects caused by hereditary disorders