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Surface area, volume, and exchange

Surface area, volume, and exchange

Cubes of different sizes and a cube versus a flattened cuboid, showing how SA:V decreases with size and increases in flatter shapes Surface area is the outside area available for exchange, and volume is the amount of living material that must be supplied. In biology, the surface area to volume ratio, or SA:V, compares exchange surface with the tissue that needs oxygen, nutrients, and waste removal.

Surface area to volume ratio Lesson

  1. A Level
  2. /Biology
  3. /Surface area to volume ratio

Step-by-step lessons on AQA A Level Biology Surface area to volume ratio, covering Surface area to volume ratio. Each one builds up to exam-style questions. Build a strong foundation in cell biology and biochemistry early on, since later topics on genetics, ecology and physiology all draw on these core concepts.

Lessons