facilitated diffusion through a specific or non specific transporter protein. passive transport.

facilitated diffusion diagram screenshot design organ specific transporter protein passive movement molecules concentration gradient transport diffusion passive transport facilitated simple active cell concentration membrane ion receptor osmosis pump substance atp transfer biology protein vector chemical gated ion channel diagram filtration movement structure atomic cellular biological chemistry compared cytoplasm education anatomy electrochemical energy entropy infographic lipid metabolism model molecule phospholipid potassium process scheme science transportation educational