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  1. Download free-response questions from past exams along with scoring guidelines, sample responses from exam takers, and scoring distributions. If you are using assistive technology and need help accessing these PDFs in another format, contact Services for Students with Disabilities at 212-713-8333 or by email at ssd@info.collegeboard.org.

    • The Exam

      Starting with the 2024 exam, the layout for the...

  2. AP Biology Review. UNIT I: CHEMISTRY OF LIFE. A. Elements. All life forms made up of matter. All matter made up of elements. Elements. Substances that cannot be broken down into smaller substances by chemical means. B. Essential Elements of Life. 96% of the mass of all living things made up of 4 elements:

  3. Starting with the 2024 exam, the layout for the free-response questions (FRQs) will be different from prior exams. For a summary of the changes, and to help you visualize this change to the layout, we’ve applied the 2024 layout to the 2021–2023 AP Biology FRQs. You can find the original scoring guidelines on the past exam questions page.

    • Writing Instrument:
    • Electronic Device:
    • Section II: Free Response Booklet Instructions
    • SECTION II: Free Response
    • If you are giving the regularly scheduled exam, say:
    • If you are giving the alternate exam for late testing, say:
    • Student Answer Sheet for the Multiple-Choice Section
    • SECTION I: Multiple Choice and Grid-In
    • SECTION II: Free Response
    • Instructions
    • Multiple-Choice Answer Key
    • Free-Response Scoring Guidelines
    • (1 point maximum) (1 point maximum)
    • point maximum)
    • Question 2
    • Question 4
    • Identification: 1 point maximum
    • Question 5
    • Scoring Worksheet

    . Pencil.required Electronic Device: . Four-function.calculator. (with.square.root).allowed. for.all.sections

    . Four-function.calculator. (with.square.root).allowed. for.all.sections

    The.questions.for.Section.II.are.printed.in.this.booklet..You.may.use. the.unlined.pages.to.organize.your.answers.and.for.scratch.work,.but. you.must.write.your.answers.on.the.labeled.pages.provided.for.each. question.. The. proctor. will. announce. the. beginning. and. end. of. the. reading. period..You.are.advised.to.spend.the.10-minute.period.re...

    After.the.break,.say: May I have everyone’s attention? Place your Student Pack on your desk. . . . You may now remove the shrinkwrap from the Section II packet, but do not open the exam booklet until you are told to do so. . . . Read the bulleted statements on the front cover of the exam booklet. Look up when you have finished. . . . Now place an A...

    You may not discuss these specific free-response questions with anyone unless they are released on the College Board website in about two days. Your AP score results will be delivered online in July.

    None of the questions in this exam may ever be discussed or shared in any way at any time. Your AP score results will be delivered online in July. If.any.students.completed.the.AP.number.card.at.the.beginning.of.this.exam,.say: Please remember to take your AP number card with you. You will need the information on this card to view your scores and ...

    Use this section to capture student responses. (Note that the following answer sheet is a sample, and may differ from one used in an actual exam.)

    DO NOT OPEN THIS BOOKLET UNTIL YOU ARE TOLD TO DO SO.

    DO NOT OPEN THIS BOOKLET UNTIL YOU ARE TOLD TO DO SO.

    The questions for Section II are printed in this booklet. You may use the unlined pages to organize your answers and for scratch work, but you must write your answers on the labeled pages provided for each question. The proctor will announce the beginning and end of the reading period. You are advised to spend the 10-minute period reading all the q...

    The following contains the answers to the multiple-choice questions in this exam.

    The following contains the scoring guidelines for the free-response questions in this exam.

    Replace the dry cotton ball with a water-soaked Ensures that glucose is the Experimental cotton ball. attractant control Constant light or temperature or duration of Other variables must be experiment or time of day, etc. held constant Environmental factors Proposed Improvement (includes but not limited to)

    Use different concentrations of glucose Use different temperature(s) Use different light levels Use a different choice chamber (size/shape) Vary duration of the experiment Vary time of day when experiment is performed Explanation

    An absorption spectrum indicates the relative amount of light absorbed across a range of wavelengths. The graphs above represent the absorption spectra of individual pigments isolated from two different organisms. One of the pigments is chlorophyll a, commonly found in green plants. The other pigment is bacteriorhodopsin, commonly found in purple p...

    Matter continuously cycles through an ecosystem. A simplified carbon cycle is depicted below. (a) Identify the key metabolic process for step I and the key metabolic process for step II and briefly explain how each process promotes movement of carbon through the cycle. For each process, your explanation should focus on the role of energy in the mov...

    I = photosynthesis / Calvin cycle AND II = (cellular) respiration / citric acid cycle / Krebs cycle

    The table below shows the amino acid sequence of the carboxyl-terminal segment of a conserved polypeptide from four different, but related, species. Each amino acid is represented by a three-letter abbreviation, and the amino acid residues in the polypeptide chains are numbered from the amino end to the carboxyl end. Empty cells indicate no amino a...

    The following provides a worksheet and conversion table used for calculating a composite score of the exam.

  4. b) the monomers that make up each macromolecule c) the function of the macromolecule in an organism d) an example of the macromolecule 5) Compare and contrast the structure of DNA and RNA. Provide at least three similarities and three differences. Part 2 - A P Biology Review Use complete sentences to answer the following questions.

  5. Key Exam Details. The AP® Biology exam is a 3-hour, end-of-course test comprised of 60 multiple-choice questions, for which you will have 1 hour and 30 minutes (this counts for 50% of your score) and 6 free-response questions, for which you will have 1 hour and 30 minutes (this counts for 50% of your score). This guide will offer an overview ...

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  7. Sample: 1C Score: 6. The response earned 1 point in part (a) for appropriate labels, units, and scaling. The response earned 1 point in part (b) for describing that the effect of caffeine on the long-term (24 hour) memory is a large increase in memory. The response earned 1 point in part (c) for identifying that caffeine concentration will not ...

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