And in this lecture, we're going to focus on the structure of the eukaryotic cell. We're going to discuss different types of organelles that exist within that that eukaryotic cell. And let's begin with the outermost structure that every single eukaryotic cell has. It's the cell membrane so basically enclosing the entire cell. And everything found inside that cell is a semipermeable phospholipid bilayer, a cell membrane that plays a role in cell transport. It basically allows things into the cell and out of the cell.