The enzyme which converts maltose to glucose is:

Which of the following statements about enzymes are true?
$i$. Enzymes lack nucleophilic groups.
$ii$. Enzymes are highly specific both in binding chiral substrates and in catalyzing their reactions.
$iii$. Enzymes catalyze chemical reactions by lowering the activation energy.
$iv$. Pepsin is a proteolytic enzyme.

The incorrect statement regarding enzymes is:

Which of the following substances is responsible for controlling the sugar level in the blood?

The correct match between Item $I$ and Item $II$ is

Item $I$	Item $II$
$A$. Allosteric effect	$P$. Molecule binding to the active site of enzyme
$B$. Competitive inhibitor	$Q$. Molecule crucial for communication in the body
$C$. Receptor	$R$. Molecule binding to a site other than the active site of enzyme
$D$. Poison	$S$. Molecule binding to the enzyme covalently

Which of the following is an amine hormone?