Singapore Junior Biology Olympiad Past Papers May 2026

Join the "Singapore Science Olympiad" Discord server. There is a dedicated #sjbo channel. Post a screenshot of a confusing question from a 2019 past paper. Usually, a senior from NUS High or a university student will break down the signalling pathway for you.

Avoid these pitfalls that sabotage your SJBO preparation: singapore junior biology olympiad past papers


Week 1: Collect papers; do Paper A under timed conditions; review mistakes; strengthen weak fundamentals (cells, biomolecules).
Week 2: Topic focus — genetics & inheritance; practice related past questions; revise Mendelian crosses, pedigrees, mutation types.
Week 3: Ecology & evolution; practice population problems, graphs, food webs, selection concepts.
Week 4: Physiology & human biology; respiration, circulation, digestion, nervous system problems.
Week 5: Plant biology & microbiology; photosynthesis, transpiration, plant transport, microbes and immune basics.
Week 6: Experimental design & data interpretation; redo earlier papers focusing on methods, error sources, statistics basics.
Week 7: Mock exam week — two full past papers under exam conditions; detailed review and targeted fixes.
Week 8: Polishing — mixed-question timed sets; quick-review cheat-sheets for formulas, key processes, and definitions. Join the "Singapore Science Olympiad" Discord server


Analyzing SJBO past papers reveals these high-yield chapters: Week 1: Collect papers; do Paper A under


To ensure you have maximized your use of Singapore Junior Biology Olympiad past papers, run this diagnostic:

Finding the Singapore Junior Biology Olympiad past papers is one thing. Finding the solutions is another. The official answer keys rarely explain why B is correct and D is wrong.

The SJBO uses a specific lexicon. Questions often begin with phrases like: "Which of the following is the best conclusion?" or "Based on the experimental data provided...". By working through 5+ years of Singapore Junior Biology Olympiad past papers, you internalize the logic traps. You learn to distinguish between "true statements" and "the correct answer to the question asked."