What is the non-protein part of an enzyme called?

$C_{12}H_{22}O_{11} + H_2O \stackrel{\text{Enzyme A}}{\longrightarrow} C_6H_{12}O_6 + C_6H_{12}O_6$
$\text{Sucrose} \quad \quad \quad \quad \quad \quad \quad \quad \quad \quad \quad \text{Glucose} \quad \quad \quad \quad \text{Fructose}$
$C_6H_{12}O_6 \stackrel{\text{Enzyme B}}{\longrightarrow} 2C_2H_5OH + 2CO_2$
$\text{Glucose}$
In the above reactions,the enzyme $A$ and enzyme $B$ respectively are :-

Which one of the following enzymes converts proteins into amino acids?

The enzyme ptyalin used for the digestion of food is present in

Which of the following statements is true regarding enzymes?

Match the following enzymes in List-$I$ with their corresponding reactions in List-$II$.

$A$. Invertase	$I$. Maltose $\rightarrow$ Glucose
$B$. Pepsin	$II$. Sucrose $\rightarrow$ Glucose + Fructose
$C$. Diastase	$III$. Proteins $\rightarrow$ Peptides
	$IV$. Starch $\rightarrow$ Maltose