Insulin Memes

The glucose molecule is desperately trying to enter the cell membrane! This brilliantly captures how glucose needs specific transport proteins to cross cell membranes. Without insulin signaling those transporters to the surface, glucose just stands outside screaming "LET ME INNNNNN!!!" The increasing desperation in the second panel is every glucose molecule after you've eaten a donut. The cell membrane is like the most exclusive nightclub in town, and glucose doesn't have its name on the list without the proper transporter proteins.