So this is facility diffusion. We see that our glucose contains all these hydroxy groups and that means it's polar. So it cannot simply go through that phospholipid bilayer. It's too large and it's too polar. So instead, what our cell membrane does is it uses a special type of protein and integral protein that basically allows the glucose to move from a high electropotential gradient to a low electric potential gradient. So down the electropotential gradient.