AP BIOLOGY

Detailed explanation-1: -Both diffusion and osmosis are passive transport processes, which means they do not require any input of extra energy to occur. In both diffusion and osmosis, particles move from an area of higher concentration to one of lower concentration.

Detailed explanation-2: -Three transport processes that do not require energy are; diffusion, osmosis and facilitated diffusion. Facilitated diffusion is a passive process: the solutes move down their concentration gradient and do not require the expenditure of cellular energy for this process.

Detailed explanation-3: -Osmosis is a special type of diffusion. Osmosis is defined as the movement of solvent (water in living systems) particles/ molecules from a region of their higher concentration (more dilute solution) to a region of their lower concentration (more concentrated solution), through a semipermeable membrane.

Detailed explanation-4: -Osmosis is a form of passive transport when water molecules move from low solute concentration(high water concentration) to high solute or low water concentration across a membrane that is not permeable to the solute. There is a form of passive transport called facilitated diffusion.

Detailed explanation-5: -Passive transport, most commonly by diffusion, occurs along a concentration gradient from high to low concentration. No energy is necessary for this mode of transport.