Which statement describes the general process of diffusion? Molecules move from inside of the cell to outside of the cell.

Molecules start out unevenly distributed and end up evenly distributed

Molecules start out evenly distributed and end up unevenly distributed.

Molecules move from outside of the cell to inside of the cell.

Molecules start out unevenly distributed and end up evenly distributed

Explanation:

Diffusion is a kind of passive transport (no energy is required) involving the movement of molecules from a region of high concentration to a region of low concentration. Before the process of diffusion occurs, there must be a difference in concentration of molecules i.e. concentration gradient.

It is the concentration gradient that facilitates the passive movement of particles/molecules from where they are high to where they are low. This occurs until the concentration across a space or membrane is equal i.e. equilibrium.

Therefore, in diffusion process, molecules start out unevenly distributed (higher on one side than the other) and end up evenly distributed (equal on both sides).

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