USABO Past Papers & One-Stop Resources

Prepare for the USABO (USA Biology Olympiad) with a complete, one-stop resource hub!

The official USABO website provides systematic preparation materials, including:

• Past exam papers

• Self-assessment questions

• Recommended reading lists

• Core knowledge summaries

• Specialized vocabulary lists

These resources are designed to help students fully understand the exam requirements, master key concepts, improve problem-solving efficiency, and boost test performance. By using these official materials strategically, students can review with focus and prepare more effectively for the competition.

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USABO Past Papers & Answer Keys

All USABO past papers and answers from 2003–2025 are compiled and ready for download. Scan the QR code to access them directly.

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USABO Self-Assessment Questions

The 2025 USABO Self-Test Question Bank is here!

• Fully covers core modules including Cell Biology, Genetics, and Evolution

• Integrates difficult concepts, key topics, and past questions with detailed explanations

• Scientifically graded from basic to advanced levels, helping students systematically identify and address knowledge gaps

Scan to download for free.

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USABO Key Notes

• 107 pages summarizing nearly all exam points from USABO & BBO past papers

• Organized by chapter, highlighting frequently tested concepts and challenging areas

• Includes high-resolution diagrams for clear and intuitive understanding

Partial preview available.

Scan to download free notes.

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USABO Must-Read Books

1. Biology by Campbell
   Comprehensive coverage from biochemistry to systems biology, widely used in universities worldwide and recommended for biology competitions. Prioritize this book if preparation time is limited.

2. Molecular Biology of the Cell by Alberts
   Known as the “Bible of Molecular Biology,” offering vivid explanations and clear layouts. Ideal for advanced USABO prep and for students planning to study molecular biology in college.

3. Essential Cell Biology
   Focuses on fundamental cell biology concepts across 20 chapters, covering cellular structures, processes, and recent research developments.

4. Essentials of Genetics by Klug
   Explains human origins, survival, and evolution while incorporating the latest advances in genetics. Perfect for students interested in genes and inheritance.

5. Plant Biology by Raven
   Covers plant physiology, cellular structure, metabolism, and growth. Essential for students interested in natural sciences and plant biology.

6. Human Physiology by Vander
   Systematic coverage of human physiology, richly illustrated. Supports knowledge expansion and preparation for medical school entrance exams (BMAT/UKCAT).

Scan to download the complete color PDF book list.

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Essential International Biology Vocabulary (200 Terms)

Partial preview only.

Scan to download free.

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Top 5 Recommended Self-Study Websites for USABO

1. Cells Alive!
   Interactive online platform with animations and images. Ideal for studying cell biology, microscopy, immunology, and microbiology.

2. Bio Topics
   Managed by a UK educator; features extensive biology resources and videos. Perfect for high school competition prep.

3. NIGMS NIH
   Offers detailed biomedical knowledge with images and text, enhancing understanding of complex biology concepts.

4. Biology, University of Arizona
   Includes biology animations, video lectures, and online quizzes—great for international school students and competition prep.

5. Biology Online
   The world’s largest biology database with over 75,000 terms, insights, discoveries, and trends since 2001. Widely used by students, educators, and professionals.

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USABO Compiled Lecture Notes

• Created strictly according to the official USABO syllabus

• Covers seven major modules:

  1. Animal Physiology

  2. Plant Physiology

  3. Cells

  4. Genes

  5. Animal Behavior

  6. Ecology

  7. Evolution

• Includes past exam questions for each chapter to check learning progress

• Rich illustrations and diagrams accompany key concepts to help deepen understanding and memory

Scan to inquire about the USABO lecture notes. Limited availability—first come, first served.