Practice Quiz

MCAT Biology - Question List

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76. 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.
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77. 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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78. 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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79. 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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80. 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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