The answer is:Instinct is the inherent disposition of a living organism toward a particular behavior. Instincts are generally inherited patterns of responses or reactions to certain kinds of stimuli. Instinctive behavior can be demonstrated across much of the broad spectrum of animal life.
Answer:
Enzymes have specific sites which are known as the active sites. The shape of the active sites is specific for specific kinds of substrates. This allows every enzyme to be specific for its action. Only the specific substrate will be able to fit into the active site and hence, activate the enzyme. The presence of active sites makes the activity of each enzyme specific and hence, every enzyme is able to catalyze a specific kind of reaction.