Topic 1 · Cell Biology
Challenge Me
Connect the whole topic
Each challenge tests whether you can connect a whole topic to explain one real scenario — not just answer a hard question. Work through staged questions, then answer one big-picture prompt from memory with no checklist to help you. Only afterwards will the full connection map be revealed.
Biology
Start challenge
Topic 2 · Organisation
Why did one runner collapse after the same meal and race?
Topic 3 · Infection and Response
Which outbreak-control strategy should a school adopt?
Topic 4 · Bioenergetics
How should a vertical farm maximise food yield without wasting energy?
Topic 5 · Homeostasis and Response
Should a runner continue after the monitoring system warns of danger?
Topic 6 · Inheritance, Variation and Evolution
Should a gene-edited crop be released?
Topic 7 · Ecology
How should a damaged river catchment be restored?
Chemistry
Topic 1 · Atomic Structure and the Periodic Table
Which unknown element should be used in a new battery?
Topic 2 · Bonding, Structure and Properties
Why did two heat-shield materials fail differently?
Topic 3 · Quantitative Chemistry
Which synthesis route really gives the greener yield?
Topic 4 · Chemical Changes
How should a coastal town protect steel infrastructure?
Topic 5 · Energy Changes
Which hand-warmer design is safest and most effective?
Topic 6 · Rates and Equilibrium
How should an ammonia plant respond to an energy-price crisis?
Topic 7 · Organic Chemistry
Which route should supply sustainable aviation fuel?
Topic 8 · Chemical Analysis
Can investigators prove where a contaminated medicine came from?
Topic 9 · Chemistry of the Atmosphere
Which city air-quality policy will have the greatest impact?
Topic 10 · Using Resources
Should a drought-prone region build desalination or expand recycling?
Physics
Topic 1 · Energy
Which rollercoaster redesign is genuinely more efficient?
Topic 2 · Electricity
Why did one “eco-kettle” use more electricity?
Topic 3 · Particle Model of Matter
Which container should transport a temperature-sensitive vaccine?
Topic 4 · Atomic Structure
Which isotope should a hospital use?
Topic 5 · Forces
Which crash-protection redesign should be approved?
Topic 6 · Waves
How should a remote community receive emergency communications?
Topic 7 · Magnetism and Electromagnetism
Which regenerative-braking motor should an electric bus use?
Topic 8 · Space Physics