what is the type of diffusion that involves a carrier protein
Facilitated diffusion is a type of diffusion involving the transport of ions or polar molecules by a trans-membrane protein (channel protein or carrier protein) â¦ without using energy. Active transport is the transport of ions from a region of low concentration to a region of high concentration, against a concentration gradient, by a protein pump USING ENERGY from respiration. They are quite similar because, for one thing, they both involve movement of ions and require protein for transport.