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state
Recall and explain
state: give a concise answer.
Fill the gaps. Diffusion is the ___ movement of particles from a ___ concentration to a ___ concentration, as a result of their ___ movement. It is faster at a ___ temperature.
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Scope and sources
Cambridge IGCSE Biology 0610 · 2026–2028 v3 · Original learning materials.
Diffusion as the net movement of particles down a concentration gradient, its energy and the four factors (3.1.1, 3.1.2, 3.1.5) through the agar-cube practical; diffusion through cell membranes and its importance for gases and solutes (3.1.3, 3.1.4); active transport (3.3.1) with root hairs and protein carriers (Supplement 3.3.2–3.3.3). Osmosis is in the next module. Times in the experiment come from a teaching model.
Apparatus, amounts and times in the experiment are illustrative. Real practical work follows a teacher-approved safety method.
Official Cambridge syllabus