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

Movement into and out of cells — practice question

A leafy shoot was connected to a potometer and placed under several different conditions. For each condition, the time required for the meniscus to travel $50\,\text{mm}$ along the capillary tubing was measured. Which option indicates the lowest and highest rates of water uptake?

  • Aslowest $0.3\,\text{mm s}^{-1}$, fastest $1.3\,\text{mm s}^{-1}$
  • Bslowest $0.3\,\text{mm s}^{-1}$, fastest $3.3\,\text{mm s}^{-1}$
  • Cslowest $3.3\,\text{mm s}^{-1}$, fastest $0.3\,\text{mm s}^{-1}$
  • Dslowest $1.3\,\text{mm s}^{-1}$, fastest $0.8\,\text{mm s}^{-1}$

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