Obsessive-compulsive disorder is
an anxiety disorder in which an individual have persistent unwanted thoughts or
obsessions that gives them the urge to do something repeatedly. People with obsessive-compulsive
disorder find it difficult to stop the compulsive acts or to keep their focus
off the obsessions and an attempt to stop it can lead to depression and severe
anxiety. For the question given above, George is likely to experience severe
anxiety if he tries to stop his compulsive behaviors.
Answer:
lice is any small, wingless insect of the order Anoplura (sucking louse), parasitic on humans and other mammals and having mouthparts adapted for sucking, as Pediculus humanus (body louse or head louse) and Phthirius pubis.
Explanation: hope it helps !!
Provided that there's no diagram, most molecules have particular areas on the molecules, called the "active area" that act as a lock to a particular substrate's molecular structure, providing the key.
An enzyme's active area is only able to be "unlocked" by a certain substrate's "key".