Which of the following statements is incorrect?

Which of the following hormones is produced under conditions of stress and stimulates glycogenolysis in the liver of human beings?

The incorrect statements regarding enzymes are:
$A$. Enzymes are biocatalysts.
$B$. Enzymes are non-specific and can catalyse different kinds of reactions.
$C$. Most enzymes are globular proteins.
$D$. Enzyme oxidase catalyses the hydrolysis of maltose into glucose.
Choose the correct answer from the options given below:

How do enzymes help a substrate to be attacked by the reagent effectively?

Enzymes are

Which of the following act as intracellular messengers?