The enzyme lactase is responsible for the breakdown of lactose into:

The ratio of the enzyme to substrate molecule can be as high as

The graph showing the concept of activation energy of an enzyme is given below. Observe the graph and choose the correct option for $M$ and $N$.

What are enzymes composed of?

Name the class of enzyme that usually catalyzes the following reaction:
$S-G + S^* \rightarrow S + S^*-G$
Where,
$G \rightarrow$ a group other than hydrogen
$S \rightarrow$ a substrate
$S^* \rightarrow$ another substrate

Who proposed the principle of "Induced fit"?