Maltase is which type of enzyme?

Match Column-$I$ and Column-$II$ with reference to enzymes and select the correct option.

Column-$I$	Column-$II$
$a$. Transferase	$i$. Aldolase
$b$. Hydrolase	$ii$. Alcohol dehydrogenase
$c$. Lyase	$iii$. Sucrase
$d$. Oxidoreductase	$iv$. Glucokinase

Activation energy $ = .......... $

Which enzyme catalyzes the breaking of bonds without the use of water or oxidation?

Inhibition of an enzyme by a structural analogue of the substrate is known as .........

In the given equation $E + S \rightarrow E-S \text{ Complex} \rightarrow E + P$, what does the part labeled "$a$" represent?