Practice Quiz

CLEP Natural Sciences - Biological Science - Question List

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16. All organisms have ways to produce ATP. Which of the following statements describes why ATP is a critical compound for all cells?
  1. It causes mitosis to begin.
  2. It is an energy-transfer molecule.
  3. It is a major component of cell membranes.
  4. It carries information from DNA to the ribosomes.
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17. Lobsters and spiders are both classified in the phylum Arthropoda. Lobsters and spiders are therefore also classified in the same
  1. class.
  2. family.
  3. genus.
  4. kingdom.
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18. Which of the following features of DNA is most important in determining the phenotype of an organism?
  1. the direction of the helical twist
  2. the number of deoxyribose sugars
  3. the sequence of nitrogenous bases
  4. the strength of the hydrogen bonds
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19. A portion of one strand of a DNA molecule has the sequence shown below:

ACCTGAAGG

Assuming there are no mutations in this portion of the DNA, what is the corresponding sequence on the complementary DNA strand?
  1. ACCTGAAGG
  2. GTTCAGGAA
  3. TGGACTTCC
  4. UGGACUUCC
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20. Which of the following human activities reduces biodiversity?
  1. prohibiting hunting in wildlife preserves
  2. taking tissue samples from members of endangered species
  3. planting only native grass species to prevent erosion beside highways
  4. planting only red pine trees to replace native hardwood forests cut for lumber
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