AP BIOLOGY

Detailed explanation-1: -Diffusion is defined as the movement of individual molecules of a substance through a semipermeable barrier from an area of higher concentration to an area of lower concentration [34].

Detailed explanation-2: -Diffusion is defined as the net movement of molecules from an area of greater concentration to an area of lesser concentration. The molecules in a gas, a liquid or a solid are in constant motion due to their kinetic energy. Molecules are in constant movement and collide with each other.

Detailed explanation-3: -Definition: The process of movement of a substance (solid, liquid, or gas) from the region of higher concentration to the region of lower concentration so as to spread uniformly is called diffusion. In the process of diffusion the molecules of the one substance mix with the molecule of the other substance.

Detailed explanation-4: -1. What is diffusion? Diffusion is the movement of molecules from a region of higher concentration to a region of lower concentration down the concentration gradient.

Detailed explanation-5: -diffusion, process resulting from random motion of molecules by which there is a net flow of matter from a region of high concentration to a region of low concentration. A familiar example is the perfume of a flower that quickly permeates the still air of a room.