AP BIOLOGY

Detailed explanation-1: -Diffusion always causes particles to move from a region of HIGH concentration to a region of LOW concentration. Diffusion is the passive movement of particles – energy does not need to be added for it to occur.

Detailed explanation-2: -Diffusion and osmosis are both passive transport processes that act to equalize the concentration of a solution. In diffusion, particles move from an area of higher concentration to one of lower concentration until equilibrium is reached.

Detailed explanation-3: -The kinetic energy of the molecules results in random motion, causing diffusion. In simple diffusion, this process proceeds without the aid of a transport protein. It is the random motion of the molecules that causes them to move from an area of high concentration to an area with a lower concentration.

Detailed explanation-4: -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.

Detailed explanation-5: -In osmosis, water moves from areas of low concentration of solute to areas of high concentration of solute.