[Campbell Biology P.971] Based on the provided text, which statement accurately describes th... | Practice Question

Based on the provided text, which statement accurately describes the relationship between diffusion distance and time?

  • A: The time it takes for a substance to diffuse is directly proportional to the distance.
  • B: A quantity of glucose takes 1 second to diffuse 100 µm, but 100 seconds to diffuse 1 mm.
  • C: Diffusion is rapid over very long distances, making it efficient for all animal cells.
  • D: If it takes 1 second to diffuse 1 cm, it will take 3 hours to diffuse 100 µm.

Explanation

The text explicitly states: 'For example, a quantity of glucose that takes 1 second to diffuse 100 µm will take 100 seconds to diffuse 1 mm and almost 3 hours to diffuse 1 cm.' Option B directly quotes part of this example.