Which enzymes catalyze the transfer of a group other than hydrogen between a pair of substrates?

The enzymes which act within the cell in which they are synthesized are called . . . . . . .

Which of the following enzymes was first isolated and purified in the form of crystals?

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:

Study the following statements:
$(a)$ The substrate binds to the active site of the enzyme.
$(b)$ Enzymes isolated from thermophilic organisms get denatured at $50^{\circ}C$.
$(c)$ The active site of the enzyme breaks the chemical bonds of the product.
$(d)$ Prosthetic groups are tightly bound to the apoenzyme.
Select the option which includes all correct statements:

The enzyme that catalyzes the addition of molecular oxygen is: