Question

Which of these describes diffusion? a The net movement of any type of molecule from a region of higher concentration to a region of lower concentration b The active transport of particles out of a cell c The net movement of any type of molecule from a region of lower concentration to a region of higher concentration d The active transport of particles into a cell

Answer 1

The correct description of diffusion is: **a The net movement of any type of molecule from a region of higher concentration to a region of lower concentration.**

Diffusion is a passive process that does not require energy and occurs until there is an equal distribution of molecules.