Question

Simple diffusion vs facilitated diffusion

Answer 1

in the former one, diffusion takes place according to the conc.gradient, ie frm higher to lower
in the later, molecules are transported ,by some carrior protiens, membrane protein provide site at.which such molecules pass through

Answer 2

Explanation:

Diffusion is the movement of a substance from an area of high concentration to an area of low concentration. Diffusion happens in liquids and gases because their particles move randomly from place to place. Diffusion is an important process for living things; it is how substances move in and out of cells.