Key term for Edexcel GCSE Biology, used in Exchange Surfaces.
The ratio of the total surface area of an organism or structure to its internal volume, which determines the efficiency of substance exchange.
Surface area to volume ratio appears in Edexcel GCSE Biology revision content for Exchange and Transport in Animals, especially Exchange Surfaces and Fick's Law.
Exchange and Transport in Animals
Exchange Surfaces • Fick's Law
Exchange and Transport in Animals
Exchange Surfaces • Alveoli
Plant Structures and Functions
Plant Transport • Leaf Structure
Plant Structures and Functions
Plant Transport • Transpiration
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