The best definition of diffusion is
A)movement of molecules from higher concentration to lower concentration.
B)movement of water across a semi-permeable membrane from high water concentration to lower water concentration.
C)movement of molecules from lower concentration to higher concentration.
D)movement of a substance against its concentration through the release of energy from ATP.

Question

Quizplus · Accepted Answer

Diffusion is the movement of molecules from an area of higher concentration to an area of lower concentration. This process occurs until there is an even distribution of molecules. Choice A accurately defines diffusion.

The Best Definition of Diffusion Is