What is the specific site on an enzyme molecule where the substrate binds during a reaction called?

Given below are two statements.
$Statement-I$: Enzyme isomerase catalyzes intramolecular rearrangement of atoms.
$Statement-II$: Oxidation and reduction reactions are catalyzed by enzyme transferase.
In the light of the above statements, choose the correct answer from the options given below.

Assertion : Allosteric enzymes show feedback inhibition.
Reason : The inhibitor is competitive.

Which enzyme is responsible for the hydrolysis of lactose?

Enzymes,vitamins,and hormones can be classified into a single category biologically because all of them $........$

The $Km$ value of the enzyme is the value of the substrate concentration at which the reaction reaches to