Question

1. describe the three types of passive transport.
2. diffusion-
3. osmosis-

Explanation:

Diffusion is the movement of molecules from an area of high - concentration to low - concentration. Osmosis is the diffusion of water across a semi - permeable membrane. The third type is facilitated diffusion, which uses transport proteins to move substances down their concentration gradient.

Answer:

1. Diffusion: Movement of molecules from high to low concentration.
2. Osmosis: Diffusion of water across a semi - permeable membrane.
3. Facilitated diffusion: Uses transport proteins to move substances down concentration gradient.