Key term for Edexcel GCSE Biology, used in Exchange Surfaces.
A mathematical ratio comparing the amount of surface area an object has relative to its total volume, indicating how efficiently it can exchange substances.
Surface Area to Volume Ratio (SA:V) appears in Edexcel GCSE Biology revision content for Exchange and Transport in Animals, especially Exchange Surfaces and Factors Affecting Diffusion.
Exchange and Transport in Animals
Exchange Surfaces • Factors Affecting Diffusion
Exchange and Transport in Animals
Exchange Surfaces • Surface Area to Volume Ratio
Exchange and Transport in Animals
Exchange Surfaces • Transport Needs
Plant Structures and Functions
Plant Transport • Root Hair Cells
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