Cambridge Biology Challenge (CBC)
Cambridge Biology Challenge (CBC)
Organised by Homerton College, University of Cambridge
Format: Paper-based examination / Essay
Exclusive opportunity to attend the Cambridge Biology Camp at Homerton College, University of Cambridge
Date: Paper-based examination - 17:00-18:30 on Jan. 14, 2027
Essay Submission - Jan. 30, 2027
Introduction

The Cambridge Biology Challenge (CBC) is an international biology challenge programme officially organised by Homerton College, University of Cambridge. It aims to cultivate students' deep thinking and scientific inquiry skills in the life sciences. The questions are designed to integrate open-ended analysis with question-and-answer reasoning, with a style aligned with the biology assessments at the University of Cambridge, emphasising critical thinking, scientific reasoning, academic expression, and interdisciplinary analytical skills. Students are required not only to master biological knowledge, but also to learn to think about problems like scientists.
To help students enhance their academic thinking and interview skills during CBC preparation, the CBC Academic Committee not only provides challenge questions, but also offers monthly academic tutorials, along with live online sessions for question analysis and academic discussion, thus systematically strengthening students' abilities in biological analysis, scientific reasoning, academic argumentation, and oral defence. Meanwhile, students and teachers will also have the opportunity to interact with and pose questions to Cambridge tutors. In addition, the Cambridge Biology Challenge offers a global biology coach plan to support school teachers to gain a deeper understanding of Cambridge-style biological problem analysis and academic defence thinking, and to assist students in systematic preparation.
Outstanding award-winning students will have the opportunity to be invited to Cambridge Biology Camp at Homerton College, where they will participate in academic exchanges and challenges alongside outstanding global students, while further developing the relevant core skills.
CBC Academic Committee
Dr. Paul Elliott
Dr. Andrew Martin Catherall-Ostler
Message from Professors - An Invitation to Future Biologists
Dear students,
Are you fascinated by life — from the hidden logic of cells to the complexity of ecosystems, evolution, disease, genetics, and the future secrets that the biologists of the future will discover?
Biology is not just about gaining factual knowledge of living organisms: to succeed in biology in the 21st century requires mathematics, statistics, data analysis, modelling, and problem-solving. To help you develop these skills, we are delighted to invite you to take part in the Cambridge Biology Challenge, an exciting new programme designed for ambitious GCSE, IGCSE, A Level and equivalent students across Asia who are ready to stretch themselves beyond the standard school curriculum.
The Cambridge Biology Challenge builds on a successful biology competition programme in the UK, now being developed in a bespoke format for students in Asia. Run by two academic biologists from Homerton College (University of Cambridge), the programme will not only reveal what a dynamic, fast-moving subject modern biology is, but also help you develop the skills needed to succeed at interview for highly selective universities.
All participants will also be supported by three themed tutorial sessions, which follow the format of the famous ‘Cambridge supervisions’ and ‘Oxford tutorials’. Each will look at an intriguing question, such as : why don’t animals have wheels?; why do we dream?; why doesn’t the heart get cancer? . In these sessions, you will get a chance to interact with Cambridge academics and practice the sort of puzzle-solving that occurs at university interviews; practice questions will be provided to help you and your peers see how these questions will be assessed in the CBC examination.
Students may take part in one or both of the following pathways:
The Challenge Track
A ‘CBC Challenge examination’ testing biological understanding, problem-solving, and quantitative biology skills. Questions are multiple-choice, calculation-based, or short answer.
The Essay Track
This additional track allows students to submit a research essay of up to 1,000 words, giving you the opportunity to investigate a biological question in depth, develop your scientific argument, and practice communicating your ideas clearly in written English.
Outstanding participants will be recognised through awards and certificates. Top awardees will be invited to attend the CBC Summer Camp at Homerton College, University of Cambridge, where they can enjoy Homerton’s unique science escape room and other exciting activities.
The formal competition will take place on 14 January 2027.
Whether you are already considering biology, medicine, natural sciences, biotechnology, psychology, environmental science, or just love science altogether, the Cambridge Biology Challenge Asia will help you build confidence, sharpen your thinking, and demonstrate your academic potential.
Most importantly, it is a chance to ask bigger questions:
How do living systems work?
How can biology help solve global problems?
What does it mean to think like a scientist?
We warmly encourage you to take part, challenge yourself, and join a community of young people across Asia who are excited by the future of biology.
We look forward to welcoming you to the Cambridge Biology Challenge Asia.
Yours sincerely,
Dr Paul Elliot
Dr Andrew Catherall-Ostler
Directors of the Cambridge Biology Challenge
Rules
Language:
English
Format:
Individual
Eligibility:
Grades 10-12
Marking:
All submissions will be directly reviewed by the Academic Committee of Cambridge Biology Challenge.
Type:
CBC is divided into two tracks: paper-based examination / essay. Participants may choose either one or both.
Awards:
The paper-based examination and essay are awarded separately
- Platinum:Top 3%
- Gold:Top 10%
- Silver:Top 30%
- Bronze:Top 50%
Paper-based Examination
- Date: January 14, 2027
- Type: Multiple-choice questions, fill-in-the-blank questions, and quantitative biology analysis questions
- Duration: 90 minutes
- Location: Paper-based in partnering school (online service application accepted)
Essay
- Topic release: Three topics will be released on September 1, 2026. Each topic will be covered in detail during the monthly academic tutorials.
- Submission deadline: January 30, 2027
- Requirements: A topic-based essay with no more than 1,000 words in English. The use of AI is strictly prohibited.
- Essay Track Rubric:Click to viewEssay Track Rubric
The essay track rubric follows the typical guidance given at University of Cambridge to students writing a Natural Sciences essay. Examiners look for the following in the essay
Criterion What examiners look for Scientific accuracy Correct facts, concepts, terminology, and quantitative information Relevance Directly answering the question rather than writing everything known about the topic Understanding Explanation of mechanisms, principles, and evidence rather than simple description Structure Logical organisation with a clear argument and progression Breadth of knowledge Appropriate coverage of the topic and integration of material from different areas Depth of analysis Critical evaluation of evidence, limitations, and alternative explanations Use of examples Specific experimental evidence, case studies, or observations Clarity Precise scientific writing and effective communication Independence of thought Synthesis, comparison, and judgement rather than reproducing lecture notes
Academic Support and Monthly Training
All participants will also be supported by three themed tutorial sessions, which follow the format of the famous ‘Cambridge supervisions’ and ‘Oxford tutorials’. Each will look at an intriguing question, such as : why don’t animals have wheels?; why do we dream?; why doesn’t the heart get cancer? . In these sessions, you will get a chance to interact with Cambridge academics and practice the sort of puzzle-solving that occurs at university interviews; practice questions will be provided to help you and your peers see how these questions will be assessed in the CBC examination.

Notice
Registration deadline:
January 4, 2027
Cambridge Biology Challenge Invitational
Introduction
The Cambridge Biology Challenge Invitational consists of a UK leg and an Asia leg. It is an elite academic exchange platform exclusively for CBC award-winning students, designed to provide outstanding biology students with an international stage to further demonstrate their academic potential, research thinking, and comprehensive competencies.
Students will take part in an advanced paper-based examination challenge and an essay challenge - key advanced components of the Invitational. Focusing on case study analysis, scientific reasoning, data interpretation, and academic argumentation skills, those challenges are designed to mirror university-level biology learning and research training more closely, encouraging students to analyse complex issues using scientific evidence, construct logical arguments, and demonstrate critical thinking and innovative reasoning beyond rote memorisation. Additionally, students will participate in Tutorial Sessions led by Cambridge academics, engaging in in-depth discussions on frontier life science topics and experiencing Cambridge's distinctive small-group tutorial system.
Meanwhile, participants will also experience one of the most distinctive team challenge initiatives at Homerton College - the Biology Team Escape Room. Students will form cross-school teams and tackle a series of tasks, including cracking genetic codes, analysing disease transmission models, interpreting experimental data, and designing solutions. In this thrilling and engaging challenge, students will need not only a solid foundation in biology, but also the ability to demonstrate teamwork, leadership, scientific decision-making, and problem-solving skills.
A special Cambridge Biology Admissions Workshop will also be available during the Invitational. Cambridge tutors and academic experts will share insights into the Cambridge Biology curriculum, frontier research directions in the life sciences, and the core competencies valued by top universities regarding admissions. This will help students develop their research, critical thinking, practical skills, and interdisciplinary competence in preparation for future applications to world-class universities.For many students, this is not merely a competition, but a rare opportunity to experience Cambridge academic culture in advance, discover the wonders of life science research, and explore the frontiers of biology alongside outstanding peers from different countries and regions.
Date
Late October 2027
Location
Shanghai
Duration
2 days
Eligibility
Award winners in the CBC
Homerton College, Cambridge Biology Camp
Introduction
The Cambridge Biology Camp is officially organised by Homerton College and is open exclusively to CBC participants who have achieved Gold Award or above.
As a vital extension of the Cambridge Biology Challenge (CBC) academic framework, the Cambridge Biology Camp goes beyond the accumulation of biological knowledge and places special emphasis on "thinking like a scientist." It focuses on developing the core competencies valued by the University of Cambridge in cultivating future life science talent, including scientific reasoning, experimental design, quantitative analysis, critical thinking, academic communication, and teamwork.
During this immersive 6-day programme (35 academic hours), students will step beyond the traditional classroom and explore cutting-edge topics in the life sciences from a researcher's perspective. The curriculum may cover some of the most dynamic research areas in contemporary biology, including neuroscience, genetics and gene editing, disease and immunology, ecology and evolution, and mathematical and computational biology. Through case studies, data interpretation, and academic discussions, students will experience the Cambridge-style inquiry-based learning model.
In addition to the thematic academic sessions, students will participate in hands-on laboratory projects, learning how to formulate scientific questions, design experimental protocols, analyse results, and present their findings in the form of research posters or academic reports. Meanwhile, innovative activities such as team-based biology challenges - including the Biology Team Escape Room, research tasks, academic debates, and collaborative projects - will further develop students' collaboration, creativity, and scientific decision-making skills in complex problem-solving contexts.
Outstanding students from different countries and regions will gather at Cambridge to explore the boundless possibilities of the life sciences, forging lifelong international perspectives and friendships through academic exchange and cross-cultural collaboration.
Date
Summer 2027
Eligibility
Top biology students worldwide who have achieved Gold Award or above in the CBC.
Location
Homerton College, University of Cambridge
Capacity
35 participants
FAQ
Consolidate your textbook knowledge. The following reference books are recommended:
Campbell Biology (International Edition)
Authors: Jane B. Reece, Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Robert B. Jackson
Publisher: Pearson Education;
Copyright: 2011
Published: 1/6/2011
Print: ISBN-10: 0321739752 | ISBN-13: 978-0321739759
Pages: 1464
Understanding Biology for Advanced Level
Authors: Glenn Toole, Susan Toole
Publisher: Nelson Thornes
Copyright: 1999
Print: ISBN-10: 0748739572 | ISBN-13: 978-0748739578
Pages: 704
Biological Science 1 and 2: v. 1&2 by Taylor, D. J., Green, N. P. O., Stout, G. W. 3rd (third) Edition (1997)
Authors: D. J., Green, N. P. O., Stout, G. W. Taylor
Publisher: Cambridge University Press
ASIN: B00CF683H4




