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Advanced Biology Made Accessible.

Mitosisphere provides expert-designed resources for competitive biology.

1500+

Exam Competitors from 19 Countries

700+

Active Discord Community Members

Testimonials

Hear from the students who have been part of our community.
“Mitosisphere is a great organization that provided countless opportunities for me to grow in biology. Their online resources and practice problems allowed me to prepare for USABO in an engaging way, especially through the homework they provided for Baology. Monthly challenges and mock opens gave me realistic tests to gauge my readiness for the real competition. The community is also super welcoming and helpful, making Mitosisphere a great place to develop your skills!”
— Eric Liu, 2x USABO Finalist, IBO Silver Medalist
“Mitosisphere introduced me to a warm and welcoming biology community that really helped to cultivate my love and appreciation for the biological world. I first learned about Mitosisphere through the monthly challenges, which helped me to prepare for the USABO Open and Semifinal exams by introducing me to a plethora of topics with the necessary depth to appreciate and understand them. Lamnhaj's Guide to USABO also helps greatly with this; it not only provides practice questions like the monthly challenges, but also provides a structured curriculum on all the topics. Additionally, the staff and community have an infectious passion for biology, which helped me to connect with the content on a deeper level.”
— Ajay Sawant, 2026 USABO Finalist
“Combining creative question writers, a polished training platform, and airtight competition schedules, Mitosisphere is an organization like few others. Each one of their problems helped me see biology from a new angle, elegantly integrating concepts from every corner of the textbook canon and helping build confidence in problem-solving. I strongly recommend checking out their long list of resources for anyone interested in beginning a journey in competitive biology!”
— Theenash Sengupta, 2026 USABO Finalist

Join Our Team

Interested in our mission? Apply today. We are especially looking to expand our outreach team!