An example of the use of interrupted sutures after removal of palatal bony exostosis. A, A smallpalatal exostosis thatinterferes withproperdenture constructioninthisarea.B,Acrestal incision and mucoperios-teal ï¬ap reï¬ection to expose the palatal exostosis. C, Use of a bone ï¬le to remove bony excess.
A: Facilitated diffusion differs from simple diffusion in that it crosses a membrane with the aid of passive transport proteins embedded in the membrane. Both types of diffusion are the movement of particles in solution from areas of higher concentration to areas of lower concentration.
3 Answers 3. Facilitated diffusion is a passive process in which membrane channels mediate the transport of polar, or big molecules that are not solvable in the cell membrane. Co-transport, on the other hand, is active transport, as it depends on the electrochemical gradient of ions across the cell's membrane, particularly Na+.