lipid bilayer

liposome

cholesterol

lipid raft

integral membrane protein

peripheral membrane protein

simple diffusion

facilitated diffusion (passive transport)

active transport

Na⁺–K⁺ pump (Na⁺–K⁺ATPase)

P-type ATPase

multidrug-resistance (MDR) protein (P-glycoprotein)

ATP-binding cassette (ABC) domain

secondary transporter (cotransporter)

antiporter

symporter

ion channel

selectivity filter