CLEP Natural Sciences - Biological Science - Question List

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11. Mallory has four aquatic plants of the same size and species. She submerges each plant in a separate beaker filled with 200 mL of water. She then sets each beaker under a different intensity of light. Mallory observes that, of the four plants, the plant in the beaker under the most intense light gives off the most gas bubbles in a 20 min period. Which of the following statements best explains Mallory’s observations?
  1. Cells decompose most quickly under the most intense light.
  2. Water evaporates from plants fastest under the most intense light.
  3. Photosynthesis occurs at the highest rate under the most intense light.
  4. Gases in the leaves of plants expand most under the most intense light.
12. During DNA replication, the wrong nucleotide was inserted in the DNA sequence. Which of the following terms describes this situation?
  1. mutation
  2. regeneration
  3. transcription
  4. translation
13. In the human body, fibrinogen is necessary for sealing cuts and stopping the loss of blood. Since fibrinogen is made of chains of amino acids, it is an example of which type of organic molecule?
  1. carbohydrate
  2. protein
  3. fatty acid
  4. nucleic acid
14. Which of the following relationships is an example of mutualism?
  1. A lion eats a gazelle.
  2. A virus uses both a bird and a horse as hosts.
  3. A bacterium breaks down dead plant materials.
  4. A bird eats food particles from a crocodile’s teeth.
15. According to Mendel’s law of segregation, which of the following statements describes what happens to the alleles of a gene pair?
  1. The alleles are moved to different chromosomes.
  2. The alleles are mutated in the process of mitosis.
  3. The alleles are separated during fertilization.
  4. The alleles are separated during gamete formation.

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