Practice Quiz

IB Biology Exam Prep - Question List

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41. 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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42. An mRNA sequence is divided into three nucleotide sequences called:
  1. Codons
  2. Anticodons
  3. Genes
  4. Alleles
  5. Splice sites
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43. Which of the following bases is not used in RNA?
  1. Thymine
  2. Uracil
  3. Guanine
  4. Cytosine
  5. Adenine
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44. As the dominant plant of the area changes, the total biomass of the community __________.
  1. Increases
  2. Decreases
  3. Remains the same
  4. Decreases then increases
  5. Increases then decreases
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45. Over the course of 150 years, an area filled with weeds becomes more diverse and weeds are replaced by grasses, shrubs, and ultimately oaks. This process is defined as
  1. Mutation
  2. Adaptation
  3. Succession
  4. Divergence
  5. Convergence
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