What is the function of the enzyme $Zymase$?

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?

$A$ biological catalyst is essentially

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.

Which one of the following does not correctly match with each other?

Which hormone regulates the metabolism of fats,proteins,and carbohydrates in the body?