The following reaction depicts the activity of a particular class of enzymes:
$X-Y$ attached to $C-C$ (Substrate) $\xrightarrow{E}$ $X-Y$ + $C=C$ (Product)
Identify the enzyme class '$E$' from the following options:

Identify the hydrolase type enzyme.

$A$: Hormones are not enzymes,but they can stimulate the release of enzymes.
$R$: Hormones are used up in metabolism,but enzymes can act over and over again.

The figure given shows the conversion of substrate into product by an enzyme. In which one of the four options,the components of the reaction labelled $a, b, c, \& \ d$ are identified correctly?
$(i)$ Potential energy
(ii) Transition state
(iii) Activation energy with enzyme
(iv) Activation energy without enzyme

Name the scientist who for the first time isolated and purified the enzyme urease in crystalline form from Jack bean (Canavalia ensiformis).

How is the rate of an enzymatic reaction increased?