And so he formed these two individual monosaccharides sugar molecules, so the glucose and the galactose. And once we form these monosaccharides in the lumen of our small intestine, only then can the cells actually uptake these individual monosaccharides into their cytoplasm. Before that, in this stage, they can't actually uptake this relatively large molecule due to its size. Now, some individuals are basically intolerant to lactose and this condition is commonly known as Hypo lactasia. So what happens is these individuals who have Hypo lactasia basically have some type of deficiency in the activity of this lactase enzyme. And so if the enzyme cannot actually carry out its function, that means it cannot break this bond, it cannot break the bond.