The source of an enzyme is malt and that enzyme converts $X$ into $Y$. $X$ and $Y$ respectively are

Identify the correct pair having amino acid $(A)$ and the hormone $(B)$ that is an iodinated derivative of the amino acid $(A)$. ($T$ and $Y$ represent one-letter codes for amino acids.)

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

An enzyme which brings about the conversion of $Starch$ into $Maltose$ is known as:

By the action of enzymes,the rate of biochemical reaction

Which of the following ions acts as a cofactor in enzymes?