What Is the Structure Marked X in the Illustration

question 40

Multiple Choice

What is the structure marked x in the illustration?

• A) Beta-galactosidase
• B) Repressor protein
• C) Activator protein
• D) Lactose

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Definitions:

Drug Therapies

Treatment of disease or disorders with pharmaceutical drugs as opposed to surgery or other therapies.

Brain Stimulation

The application of electrical or magnetic stimulation to specific brain areas to treat neurological and psychiatric disorders or to study brain function.

Psychosurgery

A medical intervention that involves operating on the brain to treat psychological disorders or alleviate severe mental distress, now rarely performed.

Free Association

A psychoanalytic process in which a patient says whatever comes to mind without censorship, used to explore the unconscious.