AP BIOLOGY

Detailed explanation-1: -Q. is the net movement of particles from a region of high concentration to one of low concentration. Q. Diffusion is the movement of particles from a region of concentration to the region of concentration.

Detailed explanation-2: -Diffusion is the movement of molecules from an area of high concentration of the molecules to an area with a lower concentration. For cell transport, diffusion is the movement of small molecules across the cell membrane.

Detailed explanation-3: -Final answer: Movement of molecules from their higher concentration to their lower concentration is called diffusion.

Detailed explanation-4: -Passive transport is a naturally occurring phenomenon and does not require the cell to expend energy to accomplish the movement. In passive transport, substances move from an area of higher concentration to an area of lower concentration in a process called diffusion.

Detailed explanation-5: -Diffusion is the movement of particles from areas of higher concentration to areas of lower concentration. It is a natural, random process. This means that it does not require extra energy input.