Transport is the act or medium by which molecules, ions, or substrates are moved across a biological membrane.
The different types of transport are as follows:
Simple diffusion: Simple diffusion is defined as a process in which a substance moves through a translucent membrane or into a solution without the help of a transport protein.
Facilitated diffusion: Facilitated diffusion is a type of diffusion in which molecules move from a region of high concentration to a region of low concentration assisted by a conductor.
Osmosis: Osmosis is a passive transport process during which water moves from areas where solvents are less concentrated where they are more concentrated.