Which of the following enzymes cleaves the glycosidic bond in $sucrose$?

Insulin production and its action in the human body are responsible for the level of diabetes. This compound belongs to which of the following categories?

$CH_2OOCR' \newline | \newline CHOOCR'' \newline | \newline CH_2OOCR'''$ $\xrightarrow[\text{Hydrolysis}]{\text{Enzyme}} CH_2OH \newline | \newline CHOH \newline | \newline CH_2OH + R'COOH + R''COOH + R'''COOH$
The enzyme used in the above reaction is:

For the functioning of enzymes,which of the following statements is not correct?

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

The production and function of '$Insulin$' in the body are responsible for the regulation of blood sugar levels. To which of the following classes can this compound be assigned?