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

Movement into and out of cells — practice question

The diagrams illustrate the form and dimensions of two cell types. The palisade mesophyll cell has a surface area of $2200\,\mu\text{m}^2$. The columnar epithelial cell has a volume of $2250\,\mu\text{m}^3$. Which statement is correct for the palisade cell and epithelial cell in the diagrams?

  • AAn increase in surface area reduces the distance for gases to reach the centre of the cell.
  • BThe surface area of the palisade mesophyll cell is $500\,\mu\text{m}^2$ greater than the columnar epithelial cell.
  • CThe surface area to volume ratio is greater in the columnar epithelial cell than the palisade mesophyll cell.
  • DThe volume of the palisade mesophyll cell is $2500\,\mu\text{m}^3$ greater than that of the columnar epithelial cell.

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