Biology 0610 · IGCSE · Diffusion

Diffusion — practice question

Which row shows ions diffusing into a cell at the fastest rate?

  • Aion concentration in the cell: high; ion concentration in the external solution: low; surface area of the cell: large; width of the cell membrane: thin
  • Bion concentration in the cell: low; ion concentration in the external solution: high; surface area of the cell: small; width of the cell membrane: thick
  • Cion concentration in the cell: high; ion concentration in the external solution: low; surface area of the cell: small; width of the cell membrane: thick
  • Dion concentration in the cell: low; ion concentration in the external solution: high; surface area of the cell: large; width of the cell membrane: thin

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