A student cuts two cubes of potato to model cells of different sizes. Cube R has sides of 10 mm and cube S has sides of 5 mm.
For a cube, surface area =6l2 and volume =l3=l^3=l3.
Which statement describes the change in volume and in surface area to volume ratio from cube R to cube S?
The volume becomes one eighth as large and the surface area to volume ratio doubles.
The volume becomes one eighth as large and the surface area to volume ratio halves.
The volume becomes one quarter as large and the surface area to volume ratio halves.
The volume becomes one quarter as large and the surface area to volume ratio doubles.
102 exam-style questions on Edexcel GCSE Biology 8.1 Exchange surfaces and diffusion, covering 8.1.1 Introduction to exchange and transport, 8.1.2 Alveoli adapted for gas exchange, 8.1.3 Factors affecting rate of diffusion, and 8.1.4 Rate of diffusion using Fick's law. Each one has a worked solution and a mark scheme showing where the marks go.