Which enzyme is responsible for the hydrolysis of lactose?

$S$ - Statement: Ligases are enzymes that catalyze the linking of two compounds together.
$R$ - Reason: Isomerases are enzymes that catalyze the inter-conversion of optical,geometric,or positional isomers.

Enzymes which are slightly different in molecular structure but can perform identical activity are called

Which enzyme is responsible for breaking down large molecules into smaller units?

What is the component produced at the end of a biochemical reaction called?

Three of the following statements about enzymes are correct and one is wrong. Which one is wrong?