Edexcel GCSE Biology · 1BI0
Specification 8.1 · Paper 2
Revise: Transport NeedsExchange is the movement of substances across a surface, such as a cell membrane, between an organism and its surroundings.
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GCSE Biology · key term
Movement of substances into and out of an organism or its cells across a surface.
Used by Edexcel and OCR
Specification 8.1 · Paper 2
Revise: Transport NeedsExchange is the movement of substances across a surface, such as a cell membrane, between an organism and its surroundings.
Specification B2.2b · Paper 1 (Foundation), Paper 3 (Higher)
The movement of substances between an organism and its surroundings, across a cell surface or specialised surface.
Revise: Substances transportedIn both cases, substances cross cell surfaces; in a large organism, they also have to be carried between the exchange surface and the cells that use or produce them.
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