Chemically,enzymes are ....

The non-protein enzyme is

Which one of the following is an enzyme?

The apoenzyme is ......... .

Match the types of enzymes in Column-$I$ with examples in Column-$II$ and select the correct option.

Column $I$	Column $II$
$i$. Purely proteinaceous enzyme	$a$. Glucokinase
$ii$. Conjugated enzyme	$b$. Epimerase
$iii$. Transferase enzyme	$c$. Protease
$iv$. Isomerase enzyme	$d$. $FMN$

$S$ - Statement: Ligases are enzymes that catalyze the linking of two compounds together.
$R$ - Reason: Isomerases are enzymes that catalyze the inter-conversion of optical,geometric,or positional isomers.