AP BIOLOGY

Detailed explanation-1: -Osmosis happens when molecules move from higher to lower concentrations, but diffusion happens when it is reversed.

Detailed explanation-2: -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-3: -These are passive and active transport. 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.

Detailed explanation-4: -Osmosis is passive diffusion. In osmosis, water moves from high concentration to low concentration through a semi-permeable membrane. Osmosis does not require energy, i.e. ATP for the movement. Passive diffusion is the movement of solute from high concentration to low concentration.