Unformatted text preview: AP Biology
2001 Free-Response Questions The materials included in these files are intended for use by AP teachers for course
and exam preparation in the classroom; permission for any other use must be
sought from the Advanced Placement Program. Teachers may reproduce them, in
whole or in part, in limited quantities, for face-to-face teaching purposes but may
not mass distribute the materials, electronically or otherwise. These materials and
any copies made of them may not be resold, and the copyright notices must be
retained as they appear here. This permission does not apply to any third-party
copyrights contained herein. These materials were produced by Educational Testing Service (ETS), which develops and administers the examinations of the Advanced Placement
Program for the College Board. The College Board and Educational Testing Service (ETS) are dedicated to the principle of equal opportunity, and their
programs, services, and employment policies are guided by that principle.
The College Board is a national nonprofit membership association dedicated to preparing, inspiring, and connecting students to college and opportunity.
Founded in 1900, the association is composed of more than 3,900 schools, colleges, universities, and other educational organizations. Each year, the
College Board serves over three million students and their parents, 22,000 high schools, and 3,500 colleges, through major programs and services in
college admission, guidance, assessment, financial aid, enrollment, and teaching and learning. Among its best-known programs are the SAT®, the
PSAT/NMSQT™, the Advanced Placement Program® (AP®), and Pacesetter®. The College Board is committed to the principles of equity and
excellence, and that commitment is embodied in all of its programs, services, activities, and concerns.
Copyright © 2001 by College Entrance Examination Board. All rights reserved. College Board, Advanced Placement Program, AP, and the acorn logo
are registered trademarks of the College Entrance Examination Board. 2001 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. In biological systems, structure and function are related. Choose three of the following components of organ
neuron (a) For each component, describe the structure of the component and explain how that structure is responsible
for the function of that component.
(b) For the three components that you chose in part a, explain how the structure of the component contributes
to the functioning of the organ system to which it belongs. 2. Charles Darwin proposed that evolution by natural selection was the basis for the differences that he saw in
similar organisms as he traveled and collected specimens in South America and on the Galapagos Islands.
(a) Explain the theory of evolution by natural selection as presented by Darwin.
(b) Each of the following relates to an aspect of evolution by natural selection. Explain three of the following.
(i) Convergent evolution and the similarities among species (ecological equivalents) in a particular biome
(e.g., tundra, taiga, etc.)
(ii) Natural selection and the formation of insecticide-resistant insects or antibiotic-resistant bacteria
(iii) Speciation and isolation
(iv) Natural selection and behavior such as kinesis, fixed-action-pattern, dominance hierarchy, etc.
(v) Natural selection and heterozygote advantage Copyright © 2001 by College Entrance Examination Board. All rights reserved.
Advanced Placement Program and AP are registered trademarks of the College Entrance Examination Board. GO ON TO THE NEXT PAGE.
2 2001 AP® BIOLOGY FREE-RESPONSE QUESTIONS
3. A biologist measured dissolved oxygen in the top 30 centimeters of a moderately eutrophic (mesotrophic) lake in
the temperate zone. The day was bright and sunny, and the wind was calm. The results of the observations are
12:00 midnight 0.9 mg/L
2.4 mg/L (a) Using the graph paper provided, plot the results that were obtained. Then, using the same set of axes, draw
and label an additional line/curve representing the results that you would predict had the day been heavily
(b) Explain the biological processes that are operating in the lake to produce the observed data. Explain also
how these processes would account for your prediction of results for a heavily overcast day.
(c) Describe how the introduction of high levels of nutrients such as nitrates and phosphates into the lake would
affect subsequent observations. Explain your prediction. 4. Proteins–large complex molecules–are major building blocks of all living organisms. Discuss the following
in relation to proteins.
(a) The chemical composition and levels of structure of proteins
(b) The roles of DNA and RNA in protein synthesis
(c) The roles of proteins in membrane structure and transport of molecules across the membrane END OF EXAMINATION Copyright © 2001 by College Entrance Examination Board. All rights reserved.
Advanced Placement Program and AP are registered trademarks of the College Entrance Examination Board. 3 ...
View Full Document
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