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2006 Free-Response Questions The College Board: Connecting Students to College Success
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AP Central is the official online home for the AP Program: apcentral.collegeboard.com. 2006 AP® BIOLOGY FREE-RESPONSE QUESTIONS
Time— 1 hour and 30 minutes Directions: Answer all questions.
Answers must be in essay form. Outline form is not acceptable. Labeled diagrams may be used to supplement
discussion, but in no case will a diagram alone suffice. It is important that you read each question completely
before you begin to write. Write all your answers on the pages following the questions in the pink booklet.
1. A major distinction between prokaryotes and eukaryotes is the presence of membrane-bound organelles in
(a) Describe the structure and function of TWO eukaryotic membrane-bound organelles other than the nucleus.
(b) Prokaryotic and eukaryotic cells have some non-membrane-bound components in common. Describe the
function of TWO of the following and discuss how each differs in prokaryotes and eukaryotes.
• Cell wall
(c) Explain the endosymbiotic theory of the origin of eukaryotic cells and discuss an example of evidence
supporting this theory. © 2006 The College Board. All rights reserved.
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2 2006 AP® BIOLOGY FREE-RESPONSE QUESTIONS 2. According to fossil records and recent published observations, two species of leaf-eating beetles (species A and
B) have existed on an isolated island in the Pacific Ocean for over 100,000 years. In 1964 a third species of leafeating beetle (species C) was accidentally introduced on the island. The population size of each species has been
regularly monitored as shown in the graph above.
(a) Propose an explanation for the pattern of population density observed in species C.
(b) Describe the effect that the introduction of beetle species C has had on the population density of species A
and species B. Propose an explanation for the patterns of population density observed in species A and in
(c) Predict the population density of species C in 2014. Provide a biological explanation for your prediction.
(d) Explain why invasive species are often successful in colonizing new habitats. 3. The movement of water through vascular plants is important to their survival.
(a) Explain the mechanism of water movement through vascular plants during transpiration. Include a
discussion of how the anatomy of vascular plants and the properties of water contribute to this process.
(b) Explain how gas exchange affects transpiration.
(c) Describe TWO adaptations that affect the rate of transpiration in desert plants. 4. The evolution of circulatory systems allowed larger and more-complex animals to arise.
(a) Describe the respiratory and digestive systems' specialized structures that facilitate the movement of oxygen
and glucose into the circulatory system of mammals.
(b) Explain how oxygen and glucose are transported within the circulatory system of mammals.
(c) Explain the transfer of oxygen and glucose from the blood and into the active cells of mammals. END OF EXAM © 2006 The College Board. All rights reserved.
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This note was uploaded on 08/19/2010 for the course BIOLOGY 101 taught by Professor Mancino during the Spring '10 term at Abant İzzet Baysal University.
- Spring '10