And this is actually a description of a specific type of enzyme, one of the quickest enzymes found in our body, carbonic anhydrate. So remember, carbonic anhydrates is that enzyme found inside the red blood cells, which essentially allows us to actually transform the non polar carbon dioxide molecule into the polar bicarbonate ion. And that's how we can store the carbon dioxide inside our blood and transport it from the cells and tissues and to the lungs in our body. So carbonic anhydrase has this turnover number. It is able to actually use a single active site, a single enzyme, a single carbonic. And hydrate can transform this many substrate molecules, CO2 molecules, into the product bicarbonate every single second.