Of the following conditions, which is absolutely necessary for diffusion to take place?
A) a differentially permeable membrane
B) low temperatures
C) a concentration difference
D) a non-permeable membrane
E) a living cell

Question

Quizplus · Accepted Answer

Diffusion requires a concentration difference, as it is the movement of particles from an area of high concentration to an area of low concentration. The other choices are not necessary for diffusion to occur. A differentially permeable membrane can facilitate diffusion, but it is not required. Low temperatures can slow or even stop diffusion, but they do not prevent it from occurring. A non-permeable membrane would prevent diffusion altogether. Living cells may undergo diffusion, but it is not a requirement for diffusion to occur.

Of the Following Conditions, Which Is Absolutely Necessary for Diffusion