Practice Quiz

CLEP Natural Sciences - Biological Science - Question List

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21. 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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22. 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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23. 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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24. Which of the following statements best compares sensory neuron function and motor neuron function in the human body?
  1. Sensory neurons are voluntarily controlled, whereas motor neurons are involuntarily controlled.
  2. Sensory neurons respond to light and sound stimuli, whereas motor neurons respond to touch stimuli.
  3. Sensory neurons send signals to motor neurons, whereas motor neurons send signals to the central nervous system.
  4. Sensory neurons send signals to the central nervous system, whereas motor neurons receive signals from the central nervous system.
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25. Which of the following statements explains why viruses are able to reproduce only inside host cells instead of being able to reproduce on their own?
  1. Viruses cannot function at temperatures other than 98.6°F.
  2. Viruses lack spindle fibers that correctly align chromosomes for division.
  3. Viruses are too small to effectively make copies of themselves on their own.
  4. Viruses lack the cellular machinery needed to make copies of their genetic material.
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