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

Movement into and out of cells — practice question

The diagram illustrates the average dimensions of an epithelial cell in micrometres ($\mu\text{m}$). Which row gives the epithelial cell’s surface area to volume ratio, and how would this ratio change if the cell width were doubled?

  • A12:23, decreases
  • B12:23, increases
  • C23:12, decreases
  • D23:12, increases

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