BIO Olympiad Initiative USA-Asia (BIOUS)
Win an advantage when applying for top science universities
More than 10,000 students participate every year
Guides students to dive deeper into the world of biology
Beneficial for applying to science majors in top universities
Date: Apr. 5 2026 (Sun.) 50mins
Official Announcement
The significant growth and high academic standards demonstrated by students across Asia have become vital components of the global biological sciences community. In recognition of this dedication and the increasing importance of regional participation, in collaboration with the organising committee, we are transitioning the competition to a more representative title: the BIO Olympiad Initiative USA-Asia (BIOUS) from now on. For more details, please click here to get More Inforamtion >
Introduction
The Center for Excellence in Education (CEE) was founded in 1983 with the intention of nurturing careers of excellence and leadership in science and technology in young scholars as an essential investment into the global future. CEE programs help maintain competitiveness in science and technology while furthering international collaboration among world leaders. The Center challenges students and provides long term assistance to help them become the creators, inventors, scientists, and leaders of the 21st century.
The BIO Olympiad Initiative USA Asia (BIOUS), also known as the USA Bio Olympiad in the United States, enriches the life science education of nearly 11,000 talented students annually. BIOUS focuses on stimulating the intellectual curiosity of young scholars and developing critical thinking in laboratory skills and biological reasoning to propel them toward careers of excellence and leadership in science and technology. The initiative provides students with the motivation, curricular resources, and skills training necessary to take them beyond the classroom experience to a level of international competitiveness.
Challenge Rules
Language
English
Date
Apr. 5 2026 (Sun.) 50mins
Form
Online (Computer or Laptop with working camera)
Student Eligibility
High school students (Grade 10-12/Year 11-13)
Type
Individual written test (no experiment)
Format
50 multiple-choice questions in 50 minutes
Topics
Animal Anatomy and Physiology, Cell Biology, Genetics and Evolution, Plant Anatomy and Physiology, Ecology, Ethology, Biosystematics
Awards
Asian awards:
- Asian Top Gold: Top 5%
- Asian Gold: Top 15%
- Asian Silver: Top 30%
- Asian Bronze: Top 45%
- Asian Honorable Awards: Top 25%
Registration Deadline
2 weeks before the competition
Registration Details
Registration Phase
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The School can apply for partner school and students can directly register via School.
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The Registration Deadline will last until 2 Weeks before Exam Date of each competitions.
About Payment
Schools can submit the registration form and issue the payment accordingly before the registration deadline.
Exam Centers
Performance Report
ASDAN EPQ Scholarship
3000RMB/std
Gold
2000RMB/std
Silver
1000RMB/std
Bronze
Noted:The ASDAN Scholarship is only available to Year 10, 11 and 12 students for participating ASDAN Extended Project Qualification(EPQ). EPQ is recommended by the G5 group and many leading universities as a competitive academic experience. Scholarships cannot be exchanged for cash. For further details see:http://www.seedasdan.org/epq/。
Sample Problems
1. Suppose radioactive thymine was added to an actively dividing culture of E. coli bacteria. What would happen if a cell replicated once in the presence of this radioactive base?
- Only one daughter cell would have radioactive DNA
- Neither of the two daughter cells would be radioactive
- All four DNA bases would be radioactive
- Radioactive thymine would pair with nonradioactive guanine
- DNA in both daughter cells would be radioactive
Answer: E
2. If radioactive sulfur (35S) is used in the culture medium of bacteria that harbor bacteriophage viruses, it will later appear in:
- Bacterial RNA
- Bacterial cell wallsBacterial cell walls
- Bacterial cell walls
- Viral RNA
- Viral coats
Answer: E


















