Here's a breakdown:
* Glucose is a large, polar molecule, meaning it can't easily pass through the cell membrane's hydrophobic lipid bilayer.
* Facilitated diffusion utilizes transport proteins embedded in the cell membrane. These proteins act as channels or carriers, binding to glucose and helping it cross the membrane.
* This process is passive, meaning it doesn't require energy from the cell. It's driven by the concentration gradient, with glucose moving from an area of high concentration outside the cell to an area of lower concentration inside the cell.
While active transport is involved in glucose movement in specific cases (like in the intestines), facilitated diffusion is the primary mechanism by which glucose enters most cells in the body.