Biology 9700 · AS & A Level · Movement into and out of cells

Movement into and out of cells — practice question

In an experiment, four cubes of colourless agar, each a different size, were put into a blue dye. The time for each cube to become blue was measured. Which row gives the surface area and volume of the cube that took the greatest time to become fully blue?

  • Asurface area $6.0\,\mathrm{cm}^2$, volume $1\,\mathrm{cm}^3$
  • Bsurface area $9.5\,\mathrm{cm}^2$, volume $2\,\mathrm{cm}^3$
  • Csurface area $12.5\,\mathrm{cm}^2$, volume $3\,\mathrm{cm}^3$
  • Dsurface area $38.0\,\mathrm{cm}^2$, volume $16\,\mathrm{cm}^3$

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