Practice Quiz

ACT Science Exam Prep - Question List

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46. Which of the following families contains characteristically nonreactive elements?
  1. Alkali metals
  2. Alkaline earth metals
  3. Halides
  4. Halogens
  5. Noble gases
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47. Which of the following species is classified as an electrolyte?
  1. CH4
  2. C6H12O6
  3. N2
  4. Na+
  5. O3
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48. What is the most likely explanation for leaves wrapped in white construction paper having the lowest amount of chlorophyll?
  1. White paper prevented sunlight from being absorbed by the leaves
  2. White paper prevented carbon dioxide from being taken in by the leaves
  3. White paper prevented oxygen from being released by the leaves
  4. White paper prevented water from being released by the leaves
  5. Black paper prevented heat from being absorbed by the leaves.
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49. A student adds drops of lemon juice to a red cabbage pigment. What color is the solution most likely to be? Here is the pigment table for red cabbage:

pH 1-2: Pink, Acid
pH 3-4: Dark Red, Acid
pH 5-6: Violet, Acid
pH 7-8: Blue, Neutral-Base
pH 9-10: Blue-Green, Base
pH 11-12: Green-Yellow, Base
  1. Pink
  2. Blue
  3. Blue-green
  4. Greenish yellow
  5. Violet
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50. Which of the following statements about adaptive radiation is false?
  1. Adaptive radiation is a rapid process.
  2. Phenotypes adapt to the environment.
  3. Adaptive radiation often occurs as the result of an organism arising in an environment with an undefined niche.
  4. Adaptive radiation results in the creation of numerous species from a single lineage.
  5. Adaptive radiation is not driven by natural selection.
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