So basically, glucose and galactose interrogates via sodium linked secondary active transport. And what that means is we actually have to use ATP to create a certain electrochemical gradient of sodium. And then as sodium moves down its electrochemical gradient, it will move the galactose and glucose along with it. This is what we mean by sodium linked secondary active transport, and we'll see exactly what that looks like in just a moment. On the other hand, fructose can easily pass across the cell membrane by using a special type of integral protein that allows the passive diffusion of fructose into the cytoplasm of the cell. So fructose can easily move into the cell via an integral protein, and it doesn't actually use any ATP molecules.