And actually, previously we discussed one meaning of the Michaela's constant. But as we'll see in this lecture, there are two ways that we can actually interpret the meaning of the Michael's constant value. So let's begin with what we said in the previous lecture. So previously in our discussion of the Michaelis constant, we said that the Michaelis constant represents the concentration of the substrate at which the enzymes activity. The enzymes rate is exactly half of its maximum rate. So the Km describes the substrate concentration that is needed to reach exactly half of that maximum velocity of that particular enzyme.