The document summarizes different types of cell transport mechanisms. Passive transport includes diffusion, which is the movement of substances from high to low concentration areas without energy usage. Facilitated diffusion utilizes membrane protein channels to transport molecules. Osmosis is a type of facilitated diffusion where water moves through membrane channels from high to low concentration areas. Active transport moves substances against concentration gradients and requires energy in the form of transport proteins. Endocytosis transports larger particles into cells through membrane invagination, while exocytosis releases materials from cells.