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BiOGuide

BiOGuide v2.1.0 / Biology Olympiad Preparation Hub


A complete preparation platform for BiOlogy enthusiasts. Built by students, for students.

Practice Papers Your Study Dashboard

Firsthand guideOfficial outlineComing soonDrag to spin

Syllabus sections
15+
Topic pages
150+
Olympiad guides
IBO · USABO · INBO

Reel / v2.0.0 launch

This is just the beginning

POV: you started a little project to help students in Biology Olympiad prep and it turned into 10,000+ student visitors, 100+ live accounts, and a 10 person organization redefining olympiad preparation. Launching BiOGuide v2.0.0, a complete prep platform.

01 / Orientation

Start Here

New to Biology Olympiads, or not sure where to jump in? Pick what matches you best:

Completely New

Start with Cell & Molecular Biology, the foundation every other section builds on.

Start Here

Know Your Weak Spot

Browse all 15 sections and jump straight to the topic you need to shore up.

Browse Sections

Ready to Practice

Past olympiad papers with solutions and an attempt mode, browsable by year and round.

Go to BiOrchive

Preparing for a specific exam? We have detailed preparation guides for each major olympiad:

IBO Guide Format, scoring, recommended books, and a month-by-month preparation strategy for the International Biology Olympiad. IBO Preparation USABO Guide Open Exam through Semifinal: topic focus areas, registration, and stage-by-stage preparation for the USA Biology Olympiad. USABO Preparation INBO Guide NSEB through OCSC: Indian-specific resources, NCERT-to-olympiad bridging, and the full INBO preparation path. INBO Preparation

Or see the complete Biology Olympiad preparation overview for a broader look at study plans and timelines.

02 / Syllabus

The Learning Path

We cover the full IBO syllabus: 15+ sections, 150+ topic pages, growing every week. Work through them in order, or jump straight to what you need.

  1. 01 Cell & Molecular
  2. 07 Genetics
  3. 10 Bioinformatics
  1. 02 Animal Anatomy
  2. 03 Animal Physiology
  3. 09 Ethology
  1. 05 Plant Physiology
  2. 06 Plant Anatomy
  1. 04 Biosystematics
  2. 08 Ecology
  3. 15 Evolution
  1. 11 Practical I
  2. 12 Practical II
  3. 13 Practical III
  4. 14 Plant Comp. Bio
  5. 16 Biostatistics

03 / Toolkit

Practice, Resources & More

Study Dashboard

Your personalized command center: mastery tracking, prerequisite-aware recommendations, and trend analysis built from your practice history.

Open Dashboard

BiOrchive

Past olympiad papers, browsable by year and round, with solutions and an attempt mode.

Explore BiOrchive

Question Bank

Every question in the archive, searchable in one table: filter by olympiad, year, topic, and difficulty.

Search Questions

Study Resources

The full IBO/USABO syllabus, plus a graded book database and recommended video creators.

Browse Resources

BiOBytes

Exam-technique tips, lab guides, and quick bites from our Instagram, all in one place.

Read BiOBytes

BiOLab

A community protocol archive: read a verified or submitted protocol, run it yourself, and log your results.

Explore BiOLab

BiOLudo

A biology-trivia Ludo variant: character classes, a moving Unsafe Zone, and combat settled by quiz duels. Play locally or against bots.

Play BiOLudo

About BiOGuide

Why we built this, how content gets reviewed before publishing, and who's behind it.

Learn Our Story

04 / Built in house

What Makes BioGuide Stand Out

Our Plant Computational Biology Website

This is a completely indigenous resource for practicing Plant Computational Biology, which although was only in the practicals for IBO 2026, is still relevant.

IBO 2022 Bioinformatics Practical Simul

This is another indigenous website we created to help with bioinformatics practicals. It is a dynamic creation helping people seriously commit to IBO preparation.

Practice Tests

Full-screen, timed, with subject breakdown and personalized recommendations.

BiOLudo

Our first game: a biology-trivia Ludo variant where dice get you into range, but a quiz duel decides who wins the fight.

05 / Open project

Contribute to BioGuide

As of August 8 2026, this website has only been a one man project and we are currently assembling a team of people who think this is worth contributing to. So please help yourself!

BioGuide follows this open contribution model

  • Found an error? Open a GitHub Issue or submit a PR
  • Want to add a topic? Follow the template in handoff.md
  • Have a better diagram? Source it and we'll add it

We need help with

  • Expanding our Current BiOrchive: send an email to resourcerepository4boguide@gmail.com for this purpose.
  • More and improved interactive widgets (especially for Cell/Molecular Biology)
  • Adding diagrams to pages that still have placeholders
Contribute on GitHub

06 / Changelog

Recent Updates

  1. Biostatistics & Data Analysis joins Notes @ BiOGuide, brought in by Ruslanbekov Ulukbek of Kyrgyzstan, alongside his updated Kyrgyzstan guide and a new preparation roadmap in BiOBytes.

    Nishit Kalani

  2. BiOGuide v2.0.0. Sitewise security enforcement, switch to PostHog and GA4 analytics additionally, switched to a MIT license, two new team members join us as associates.

    Nishit Kalani

  3. Two new guide-testimonials from Hungary and Slovakia, a Doubts section added, the Biology Olympiad Prep page transformed, heavy changes to the BiOrchive CSS and a redesign with re-population, BiOClash registration started, and major changes to the BiOClash pipeline for a smoother workflow and bug fixes.

    Nishit Kalani

  4. Testimonial by Meryem from Turkmenistan, a new email system, country counter, CI, git LFS, security fixes, and the first practical guide, live in Notes @ BiOGuide and BiOBytes.

    Nishit Kalani

  5. Study Dashboard: personalized mastery tracking, prerequisite-aware study recommendations, trend analysis, topic-page badges, and a "weak areas first" toggle in the Question Bank, all built from your timed attempt history. How it works.

    Nishit Kalani

  6. Senior Partner announced, and the BiOClash sample problem and test-taking platform launched.

    Nishit Kalani

  7. AI Transparency Attestation: a full public disclosure of where and how AI tools were used across the site, published per EU AI Act Article 50's transparency principles.

    Nishit Kalani

  8. Discussions: open feedback and comment threads for the whole community, no gatekeeping to read, an account to post.

    Nishit Kalani

  9. BiOClash: an original biology competition, plus a Champions leaderboard on the Hall of Fame page, ready for Season 1's results.

    Nishit Kalani

  10. Accounts, profiles, and a Hall of Fame leaderboard for BiOrchive Timed Attempts, completely optional, everything still works without logging in.

    Nishit Kalani

07 / Signal

Join the Community

Discord: Chat with other students, ask questions, share resources · GitHub Issues: Report typos, request features, discuss content

Join the Discord GitHub Issues

Content (text) is licensed under CC BY-NC-SA 4.0: free to share and adapt for non-commercial purposes, with attribution. Source code is separately licensed under the MIT License. See About for full licensing and image-source details.