Answer:
1. this process continues until the substance is evenly distributed in a system.
2. depends on the cell membrane!
3. Facilitated diffusion is the diffusion of solutes through transport proteins in the plasma membrane.
Step-by-step explanation:
1. The passive forms of transport, diffusion and osmosis, move materials of small molecular weight across membranes. Substances diffuse from areas of high concentration to areas of lower concentration
2. passive transport depends on the permeability of the cell membrane, which, in turn, depends on the organization and characteristics of the membrane lipids and proteins. The four main kinds of passive transport are simple diffusion, facilitated diffusion, filtration, and/or osmosis.
3. Facilitated diffusion is a type of passive transport. Even though facilitated diffusion involves transport proteins, it is still passive transport because the solute is moving down the concentration gradient
Hopes this helps :)