Surface area to volume ratio
What Surface area to volume ratio means in Biology A (Salters-Nuffield) A-Level, as defined for Pearson Edexcel.
Definitions of Surface area to volume ratio
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Reference: Pearson Edexcel
A large surface area to volume ratio increases the number of collisions between diffusing molecules and the surface, so more molecules cross per unit time.
As body size increases this ratio falls, so the distance from the outside to the deepest cells grows.
Topics that use Surface area to volume ratio
- Topic 1: Lifestyle, Health and Risk (Pearson Edexcel A-Level)
- Topic 2: Genes and Health (Pearson Edexcel A-Level)
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