Practice Quiz

MCAS Biology Practice - Question List

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81. A portion of one strand of a DNA molecule has the sequence shown below.ACCTGAAGGAssuming 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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82. 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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83. The rock pipit and the water pipit are two types of birds found in the United Kingdom and other areas of Europe. The rock pipit and the water pipit have similar appearances and their habitat ranges overlap.Which of the following observations most likely caused scientists to classify the birds as separate species?
  1. The rock pipit is not able to produce fertile offspring with the water pipit.
  2. The rock pipit population in the United Kingdom is larger than the water pipit population.
  3. The rock pipit eats insects, fish, and seeds, but the water pipit eats only insects and larvae.
  4. The rock pipit remains in the United Kingdom year-round, but the water pipit only overwinters there.
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84. A scientist is analyzing a sample of tissue from a plant. Which of the following elements will be most abundant in the sample?
  1. zinc and copper
  2. sodium and chlorine
  3. carbon and hydrogen
  4. magnesium and calcium
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85. Fireflies produce light inside their bodies. The enzyme luciferase is involved in the reaction that produces the light. Scientists have isolated the luciferase gene.A scientist inserts the luciferase gene into the DNA of cells from another organism. If these cells produce light, the scientist knows that which of the following occurred?
  1. The luciferase gene mutated inside the cells.
  2. The luciferase gene was transcribed and translated.
  3. The luciferase gene destroyed the original genes of the cells.
  4. The luciferase gene moved from the nucleus to the endoplasmic reticulum.
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