What happens when the bond formed between an enzyme and an inhibitor is a strong covalent bond?

Which of the following biomolecules acts as specific catalysts in biological reactions?

The incorrect statements regarding enzymes are:
$A$. Enzymes are biocatalysts.
$B$. Enzymes are non-specific and can catalyse different kinds of reactions.
$C$. Most enzymes are globular proteins.
$D$. Enzyme oxidase catalyses the hydrolysis of maltose into glucose.
Choose the correct answer from the options given below:

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

What are hormones? Give their classification. State the biological importance of hormones.

Which of the following statements is incorrect for enzyme catalysis?