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Concise notes, key facts, worked examples and common mistakes.
UK · GCSE · Pearson Edexcel
A starter revision pathway with source metadata, topic map, paper/test structure, original practice, flashcards, AI tutor handoff and BattleMode reward connection.
Concise notes, key facts, worked examples and common mistakes.
Original questions mapped to topic, subtopic, skill and provider.
Active recall decks for formulas, facts, vocabulary and practicals.
Energy earned only from real revision progress and mistake repair.
This plan uses your course route, target date and confidence. It is a starter preview until the student saves the course in onboarding.
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25 min · 10 energyflashcardsSpaced recall keeps today's work from fading before the next session.
9 min · 4 energyexam modeTimed practice turns understanding into exam/test readiness.
18 min · 12 energyai tutorTutor mode uses course-aware language and should guide, not shortcut, the answer.
8 min · 3 energyGCSE Biology
GCSE Biology
Describe diffusion using an example from gas exchange in the lungs.
Source type: original · Review status: approved
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Last checked 2026-04-29. No Pearson question wording, papers, or mark schemes are embedded.
Last checked 2026-04-29. Internal original mapping; not copied from paid platforms or official papers.
What you need to know
Diffusion is net movement from high to low concentration Osmosis is water movement through a partially permeable membrane
Common mistakes
Saying particles move because they want to Missing the concentration gradient
Worked example
Worked example draft pending review.
Flashcards
GCSE Biology: Cell transport is ready as the first deck.