Here are some valuable resources that have been picked by the competition managers. They will be very helpful for studying not only for this competition, but competitive biology in general.

Sample Tests

ARBC Released In-Person Regionals Questions


Answer Key

January 2023 Online Qualifier Exam

Individual Round

Team Round

Paper Round

Wave Round

Individual Round Answer Key

Team Round Answer Key

Paper Round Answer Key

Wave Round Answer Key

January 2022 Online Pilot Test

Paper Round

Team Round

Individual Round


Here are some great textbooks on biology!

Campbell Biology

Campbell's biology is a fantastic general biology textbook and is highly recommended for this competition and the USABO. This textbook is a great introduction for new students, and we recommend that all students read this book.

Fox Human Physiology

Fox Human Physiology is a good textbook for those who would like to learn more specifically about human anatomy/physiology. Many concepts in this textbook are also applicable to animal physiology.

Ravens Biology of Plants

Raven's Biology of Plants is a great textbook for those interested in learning more about plants. It explains many concepts in a manner that is easy to comprehend.

Molecular Biology of the Cell

Molecular Biology of the Cell is a great textbook for learning more about cell and molecular biology. It explains many complex concepts and is very thorough and detailed.

Lehninger's Principles of Biochemistry

Lehninger’s Principles of Biochemistry is a textbook oriented towards teaching chemical biology and biochemistry. Many chemistry concepts are introduced and explained within the context of biology.

Griffiths' Introduction to Genetic Analysis

Griffith’s Introduction to Genetic Analysis is a thorough textbook for those interested in learning more specifically about genetics. It covers many useful concepts and helps one understand them intuitively.